303 Area Code
Area code 303 is in Colorado covering Denver , along with Acres Green, Aetna Estates and 133 towns and cities.
303 Area Code Phone Lookup
203/475
Cities covering area code 303
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Acres Green
Aetna Estates
Allenspark
Altona
Applewood
Aristocrat Ranchettes
Arvada
Aspen Park
Aurora
Bark Ranch
Bennett
Berkley
Black Hawk
Bonanza Mountain Estates
Boulder
Bow Mar
Brick Center
Brighton
Broomfield
Byers
Castle Pines
Castle Pines North
Castle Rock
Centennial
Central City
Cherry Creek
Cherry Hills Village
Coal Creek
Columbine
Columbine Valley
Comanche Creek
Commerce City
Crisman
Dacono
Dakota Ridge
Deer Trail
Denver
Derby
Dove Valley
Downieville-lawson-dumont
East Pleasant View
Edgewater
Elbert
Eldora
Eldorado Springs
Elizabeth
Empire
Englewood
Erie
Evergreen
Fairmount
Federal Heights
Firestone
Floyd Hill
Fort Lupton
Foxfield
Franktown
Frederick
Genesee
Georgetown
Glendale
Gold Hill
Golden
Grand View Estates
Greenwood Village
Gunbarrel
Hidden Lake
Highlands Ranch
Holly Hills
Hudson
Idaho Springs
Idledale
Indian Hills
Inverness
Jamestown
Keenesburg
Ken Caryl
Kiowa
Kittredge
Lafayette
Lakeside
Lakewood
Larkspur
Lazy Acres
Leyner
Littleton
Lochbuie
Lone Tree
Longmont
Louisville
Louviers
Lyons
Mead
Meridian
Morrison
Mountain Meadows
Mountain View
Nederland
Niwot
North Washington
Northglenn
Paragon Estates
Parker
Peoria
Perry Park
Pine Brook Hill
Ponderosa Park
Rollinsville
Roxborough Park
Sedalia
Seven Hills
Shaw Heights
Sheridan
Sherrelwood
Silver Plume
St. Ann Highlands
St. Mary's
Stonegate
Strasburg
Sugarloaf
Sunshine
Superior
Tall Timber
The Pinery
Thornton
Todd Creek
Twin Lakes
Upper Bear Creek
Valmont
Ward
Watkins
Welby
West Pleasant View
Westcreek
Westminster
Wheat Ridge
Zip Codes that Use 303 Area Code
80012
80204
80226
80217
80004
80121
80220
80433
80005
80010
80401
80228
80232
80294
80301
80603
80237
80021
80202
80212
80022
80014
80214
80215
80439
80516
80207
80304
80015
80013
80303
80602
80011
80003
80302
80019
80216
80231
80112
80424
80246
80233
80241
80209
80203
80205
80621
80239
80031
80211
80210
80206
80249
80002
80104
80018
80218
80223
80017
80236
80643
80020
80305
80201
80222
80016
80235
80111
80007
80033
80513
80221
80503
80309
80642
80127
80227
80006
80501
80229
80027
80230
80122
80046
80436
80438
80470
80422
80134
80107
80105
80136
80234
80102
80135
80106
80601
80224
80504
80510
80514
80138
80040
80421
80103
80116
80265
80238
80652
80452
80299
80403
80219
Phone Number Prefixes inArea code 303
| Prefix | County | City | Carrier | Type |
|---|---|---|---|---|
| (303) 200 | Arapahoe | Aurora | Teleport Communications Group - Co | Landline |
| (303) 201 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 202 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 203 | Denver | Denver | American Messaging (am), Inc. | Wireless |
| (303) 204 | Jefferson | Arvada | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 205 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 206 | Arapahoe | Littleton | Usa Mobility Wireless, Inc. | Wireless |
| (303) 207 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 208 | Jefferson | Conifer | Usa Mobility Wireless, Inc. | Wireless |
| (303) 209 | Jefferson | Arvada | Mcimetro, Ats, Inc. | Landline |
| (303) 210 | Arapahoe | Aurora | Nextel Communications, Inc. | Wireless |
| (303) 212 | Denver | Denver | Contact Paging Of Colorado, Inc. | Wireless |
| (303) 213 | Jefferson | Golden | Usa Mobility Wireless, Inc. | Wireless |
| (303) 214 | Arapahoe | Aurora | Mcimetro, Ats, Inc. | Landline |
| (303) 215 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 216 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 217 | Denver | Denver | Mcimetro, Ats, Inc. | Landline |
| (303) 218 | Boulder | Boulder | Mcimetro, Ats, Inc. | Landline |
| (303) 219 | Weld | Brighton | Mcimetro, Ats, Inc. | Landline |
| (303) 220 | Denver | Denver | Qwest Corporation | Landline |
| (303) 221 | Denver | Denver | Qwest Corporation | Landline |
| (303) 222 | Jefferson | Broomfield | Mcimetro, Ats, Inc. | Landline |
| (303) 223 | Denver | Denver | Global Crossing Local Services, Inc.-co | Landline |
| (303) 224 | Denver | Denver | Qwest Corporation | Landline |
| (303) 225 | Denver | Denver | Global Crossing Local Services, Inc.-co | Landline |
| (303) 226 | Denver | Denver | Icg Telecom Group - Co | Landline |
| (303) 227 | Adams | Commerce City | Qwest Corporation | Landline |
| (303) 228 | Denver | Denver | Icg Telecom Group - Co | Landline |
| (303) 229 | Boulder | Boulder | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 230 | Arapahoe | Aurora | Usa Mobility Wireless, Inc. | Wireless |
| (303) 231 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 232 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 233 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 234 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 235 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 236 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 237 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 238 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 239 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 240 | Jefferson | Evergreen | Usa Mobility Wireless, Inc. | Wireless |
| (303) 241 | Boulder | Erie | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 242 | Jefferson | Denver | Mcimetro, Ats, Inc. | Landline |
| (303) 243 | Denver | Denver | N.e. Colorado Cellular, Inc. | Wireless |
| (303) 244 | Denver | Denver | Qwest Corporation | Landline |
| (303) 245 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 246 | Arapahoe | Aurora | Sprint Spectrum L.p. | Wireless |
| (303) 247 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 248 | Arapahoe | Aurora | Teleport Communications Group - Co | Landline |
| (303) 249 | Boulder | Boulder | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 250 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 251 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 252 | Adams | Brighton | Qwest Corporation | Landline |
| (303) 253 | Jefferson | Broomfield | Teleport Communications Group - Co | Landline |
| (303) 254 | Adams | Brighton | Qwest Corporation | Landline |
| (303) 255 | Adams | Brighton | Qwest Corporation | Landline |
| (303) 256 | Adams | Aurora | Teleport Communications Group - Co | Landline |
| (303) 257 | Jefferson | Arvada | Sprint Spectrum L.p. | Wireless |
| (303) 258 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 259 | Denver | Denver | American Messaging (am), Inc. | Wireless |
| (303) 260 | Denver | Denver | Qwest Corporation | Landline |
| (303) 261 | Adams | Aurora | Qwest Corporation | Landline |
| (303) 262 | Denver | Denver | At&t Local | Landline |
| (303) 263 | Denver | Denver | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 264 | Arapahoe | Englewood | Teleport Communications Group - Co | Landline |
| (303) 265 | Summit | Breckenridge | Qwest Corporation | Landline |
| (303) 266 | Arapahoe | Englewood | Usa Mobility Wireless, Inc. | Wireless |
| (303) 267 | Denver | Denver | Qwest Corporation | Landline |
| (303) 268 | Denver | Denver | Icg Telecom Group - Co | Landline |
| (303) 269 | Denver | Denver | Qwest Corporation | Landline |
| (303) 270 | Denver | Denver | Qwest Corporation | Landline |
| (303) 271 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 272 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 273 | Adams | Denver | Qwest Corporation | Landline |
| (303) 274 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 275 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 276 | Denver | Denver | Convergent Communications, Inc. - Co | Landline |
| (303) 277 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 278 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 279 | Adams | Denver | Qwest Corporation | Landline |
| (303) 280 | Adams | Brighton | Qwest Corporation | Landline |
| (303) 281 | Denver | Denver | Qwest Corporation | Landline |
| (303) 282 | Denver | Denver | Qwest Corporation | Landline |
| (303) 283 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 284 | Denver | Denver | Mediaone Telecomm Corp., Dba At&t Broadband | Landline |
| (303) 285 | Denver | Denver | Icg Telecom Group - Co | Landline |
| (303) 286 | Adams | Commerce City | Qwest Corporation | Landline |
| (303) 287 | Adams | Commerce City | Qwest Corporation | Landline |
| (303) 288 | Adams | Commerce City | Qwest Corporation | Landline |
| (303) 289 | Adams | Commerce City | Qwest Corporation | Landline |
| (303) 290 | Denver | Denver | Qwest Corporation | Landline |
| (303) 291 | Denver | Denver | Qwest Corporation | Landline |
| (303) 292 | Denver | Denver | Qwest Corporation | Landline |
| (303) 293 | Denver | Denver | Qwest Corporation | Landline |
| (303) 294 | Denver | Denver | Qwest Corporation | Landline |
| (303) 295 | Denver | Denver | Qwest Corporation | Landline |
| (303) 296 | Denver | Denver | Qwest Corporation | Landline |
| (303) 297 | Denver | Denver | Qwest Corporation | Landline |
| (303) 298 | Denver | Denver | Qwest Corporation | Landline |
| (303) 299 | Denver | Denver | Qwest Corporation | Landline |
| (303) 300 | Denver | Denver | Qwest Corporation | Landline |
| (303) 301 | Adams | Brighton | Icg Telecom Group - Co | Landline |
| (303) 302 | Arapahoe | Aurora | Xo Colorado, Llc | Landline |
| (303) 304 | Weld | Fort Lupton | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 305 | Denver | Denver | Mcimetro, Ats, Inc. | Landline |
| (303) 306 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 307 | Denver | Denver | Qwest Corporation | Landline |
| (303) 308 | Denver | Denver | Qwest Corporation | Landline |
| (303) 309 | Denver | Denver | Global Crossing Local Services, Inc.-co | Landline |
| (303) 310 | Adams | Westminster | Contact Paging Of Colorado, Inc. | Wireless |
| (303) 312 | Denver | Denver | Qwest Corporation | Landline |
| (303) 313 | Denver | Denver | Qwest Corporation | Landline |
| (303) 314 | Denver | Denver | Qwest Corporation | Landline |
| (303) 315 | Denver | Denver | Qwest Corporation | Landline |
| (303) 316 | Denver | Denver | Qwest Corporation | Landline |
| (303) 317 | Denver | Denver | Qwest Corporation | Landline |
| (303) 318 | Denver | Denver | Qwest Corporation | Landline |
| (303) 319 | Denver | Denver | Elbert County Wireless, Llc | Wireless |
| (303) 320 | Denver | Denver | Qwest Corporation | Landline |
| (303) 321 | Denver | Denver | Qwest Corporation | Landline |
| (303) 322 | Denver | Denver | Qwest Corporation | Landline |
| (303) 323 | Boulder | Boulder | Mcimetro, Ats, Inc. | Landline |
| (303) 324 | Jefferson | Arvada | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 325 | Douglas | Castle Rock | Icg Telecom Group - Co | Landline |
| (303) 326 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 327 | Jefferson | Broomfield | Icg Telecom Group - Co | Landline |
| (303) 328 | Jefferson | Denver | Mcimetro, Ats, Inc. | Landline |
| (303) 329 | Denver | Denver | Qwest Corporation | Landline |
| (303) 330 | Jefferson | Denver | 360networks (usa) Inc. - Co | N/A |
| (303) 331 | Denver | Denver | Qwest Corporation | Landline |
| (303) 332 | Arapahoe | Aurora | T-mobile Usa, Inc. | Wireless |
| (303) 333 | Denver | Denver | Qwest Corporation | Landline |
| (303) 334 | Denver | Denver | Mcimetro, Ats, Inc. | Landline |
| (303) 335 | Denver | Denver | Winstar Communications, Llc - Co | Landline |
| (303) 336 | Denver | Denver | Qwest Corporation | Landline |
| (303) 337 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 338 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 339 | Denver | Denver | Cbeyond Communications, Llc-co | Landline |
| (303) 340 | Adams | Aurora | Qwest Corporation | Landline |
| (303) 341 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 342 | Denver | Denver | Qwest Corporation | Landline |
| (303) 343 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 344 | Adams | Aurora | Qwest Corporation | Landline |
| (303) 345 | Denver | Denver | Icg Telecom Group - Co | Landline |
| (303) 346 | Denver | Denver | Qwest Corporation | Landline |
| (303) 347 | Denver | Denver | Qwest Corporation | Landline |
| (303) 348 | Denver | Denver | Qwest Corporation | Landline |
| (303) 349 | Denver | Denver | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 350 | Boulder | Boulder | New Cingular Wireless Pcs, Llc | Landline |
| (303) 351 | Weld | Keenesburg | 360networks (usa) Inc. - Co | N/A |
| (303) 352 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 353 | Arapahoe | Aurora | Comcast Phone Of Colorado, Llc - Co | Landline |
| (303) 354 | Denver | Denver | Mcimetro, Ats, Inc. | Landline |
| (303) 355 | Denver | Denver | Qwest Corporation | Landline |
| (303) 356 | Denver | Denver | Nextel Communications, Inc. | Wireless |
| (303) 357 | Denver | Denver | Mcimetro, Ats, Inc. | Landline |
| (303) 358 | Broomfield | Broomfield | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 359 | Arapahoe | Aurora | T-mobile Usa, Inc. | Wireless |
| (303) 360 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 361 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 362 | Arapahoe | Englewood | Teleport Communications Group - Co | Landline |
| (303) 363 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 364 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 365 | Adams | Aurora | Qwest Corporation | Landline |
| (303) 366 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 367 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 368 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 369 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 370 | Denver | Denver | Qwest Corporation | Landline |
| (303) 371 | Adams | Aurora | Qwest Corporation | Landline |
| (303) 372 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 373 | Adams | Aurora | Qwest Corporation | Landline |
| (303) 374 | Jefferson | Denver | Teleport Communications Group - Co | Landline |
| (303) 375 | Adams | Aurora | Qwest Corporation | Landline |
| (303) 376 | Arapahoe | Aurora | Icg Telecom Group - Co | Landline |
| (303) 377 | Denver | Denver | Qwest Corporation | Landline |
| (303) 378 | Boulder | Boulder | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 379 | Boulder | Boulder | Teleport Communications Group - Co | Landline |
| (303) 380 | Denver | Denver | Qwest Corporation | Landline |
| (303) 381 | Boulder | Boulder | Icg Telecom Group - Co | Landline |
| (303) 382 | Denver | Denver | Qwest Corporation | Landline |
| (303) 383 | Denver | Denver | Qwest Corporation | Landline |
| (303) 384 | Denver | Denver | Qwest Corporation | Landline |
| (303) 385 | Boulder | Boulder | Icg Telecom Group - Co | Landline |
| (303) 386 | Jefferson | Broomfield | Icg Telecom Group - Co | Landline |
| (303) 387 | Denver | Denver | Time Warner Telecom Of Colorado Llc-co | Landline |
| (303) 388 | Denver | Denver | Qwest Corporation | Landline |
| (303) 389 | Denver | Denver | Qwest Corporation | Landline |
| (303) 390 | Douglas | Castle Rock | Mcimetro, Ats, Inc. | Landline |
| (303) 391 | Denver | Denver | Qwest Corporation | Landline |
| (303) 392 | Denver | Denver | Contact Paging Of Colorado, Inc. | Wireless |
| (303) 393 | Denver | Denver | Qwest Corporation | Landline |
| (303) 394 | Denver | Denver | Qwest Corporation | Landline |
| (303) 395 | Denver | Denver | Global Crossing Local Services, Inc.-co | Landline |
| (303) 396 | Denver | Denver | Live Wire Networks, Inc. - Co | Landline |
| (303) 397 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 398 | Denver | Denver | Qwest Corporation | Landline |
| (303) 399 | Denver | Denver | Qwest Corporation | Landline |
| (303) 400 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 401 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 402 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 403 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 404 | Broomfield | Broomfield | Qwest Corporation | Landline |
| (303) 405 | Denver | Denver | Qwest Corporation | Landline |
| (303) 406 | Boulder | Boulder | Icg Telecom Group - Co | Landline |
| (303) 407 | Denver | Denver | Winstar Communications, Llc - Co | Landline |
| (303) 408 | Denver | Denver | New Cingular Wireless Pcs, Llc | Landline |
| (303) 409 | Jefferson | Denver | Icg Telecom Group - Co | Landline |
| (303) 410 | Broomfield | Broomfield | Qwest Corporation | Landline |
| (303) 412 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 413 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 414 | Arapahoe | Englewood | Icg Telecom Group - Co | Landline |
| (303) 415 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 416 | Arapahoe | Englewood | Global Crossing Local Services, Inc.-co | Landline |
| (303) 417 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 418 | Arapahoe | Aurora | Icg Telecom Group - Co | Landline |
| (303) 419 | Arapahoe | Aurora | Nextel Communications, Inc. | Wireless |
| (303) 420 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 421 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 422 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 423 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 424 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 425 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 426 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 427 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 428 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 429 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 430 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 431 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 432 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 433 | Denver | Denver | Qwest Corporation | Landline |
| (303) 434 | Jefferson | Wheat Ridge | Nextel Communications, Inc. | Wireless |
| (303) 435 | Larimer | Berthoud | Nextel Communications, Inc. | Wireless |
| (303) 436 | Denver | Denver | Qwest Corporation | Landline |
| (303) 437 | Jefferson | Arvada | Sprint Spectrum L.p. | Wireless |
| (303) 438 | Jefferson | Broomfield | Qwest Corporation | Landline |
| (303) 439 | Broomfield | Broomfield | Qwest Corporation | Landline |
| (303) 440 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 441 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 442 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 443 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 444 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 445 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 446 | Denver | Denver | Qwest Corporation | Landline |
| (303) 447 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 448 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 449 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 450 | Adams | Brighton | Qwest Corporation | Landline |
| (303) 451 | Adams | Brighton | Qwest Corporation | Landline |
| (303) 452 | Adams | Brighton | Qwest Corporation | Landline |
| (303) 453 | Adams | Brighton | Qwest Corporation | Landline |
| (303) 454 | Denver | Denver | Qwest Corporation | Landline |
| (303) 455 | Denver | Denver | Qwest Corporation | Landline |
| (303) 456 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 457 | Adams | Brighton | Qwest Corporation | Landline |
| (303) 458 | Denver | Denver | Qwest Corporation | Landline |
| (303) 459 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 460 | Jefferson | Broomfield | Qwest Corporation | Landline |
| (303) 461 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 462 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 463 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 464 | Jefferson | Broomfield | Qwest Corporation | Landline |
| (303) 465 | Jefferson | Broomfield | Qwest Corporation | Landline |
| (303) 466 | Broomfield | Broomfield | Qwest Corporation | Landline |
| (303) 467 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 468 | Denver | Denver | Cbeyond Communications, Llc-co | Landline |
| (303) 469 | Jefferson | Broomfield | Qwest Corporation | Landline |
| (303) 470 | Denver | Denver | Qwest Corporation | Landline |
| (303) 471 | Denver | Denver | Qwest Corporation | Landline |
| (303) 472 | Jefferson | Arvada | Nextel Communications, Inc. | Wireless |
| (303) 473 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 474 | Arapahoe | Aurora | Teleport Communications Group - Co | Landline |
| (303) 475 | Jefferson | Arvada | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 476 | Arapahoe | Aurora | Mcimetro, Ats, Inc. | Landline |
| (303) 477 | Adams | Denver | Qwest Corporation | Landline |
| (303) 478 | Broomfield | Broomfield | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 479 | Weld | Brighton | Teleport Communications Group - Co | Landline |
| (303) 480 | Denver | Denver | Qwest Corporation | Landline |
| (303) 481 | Arapahoe | Aurora | Mcimetro, Ats, Inc. | Landline |
| (303) 482 | Denver | Denver | Global Crossing Local Services, Inc.-co | Landline |
| (303) 483 | Arapahoe | Englewood | Icg Telecom Group - Co | Landline |
| (303) 484 | Boulder | Boulder | Teleport Communications Group - Co | Landline |
| (303) 485 | Boulder | Longmont | Qwest Corporation | Landline |
| (303) 486 | Denver | Denver | Qwest Corporation | Landline |
| (303) 487 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 488 | Denver | Denver | Qwest Corporation | Landline |
| (303) 489 | Jefferson | Arvada | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 490 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 491 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 492 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 493 | Arapahoe | Englewood | Icg Telecom Group - Co | Landline |
| (303) 494 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 495 | Arapahoe | Englewood | Mcimetro, Ats, Inc. | Landline |
| (303) 496 | Denver | Denver | Xo Colorado, Llc | Landline |
| (303) 497 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 498 | Adams | Brighton | Comcast Phone Of Colorado, Llc - Co | Landline |
| (303) 499 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 500 | Weld | Hudson | Commpartners, Llc - Co | Landline |
| (303) 501 | Jefferson | Denver | Cellco Partnership Dba Verizon Wireless - Co | N/A |
| (303) 502 | Weld | Fort Lupton | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 503 | Denver | Denver | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 504 | Denver | Denver | Qwest Corporation | Landline |
| (303) 505 | Jefferson | Littleton | Usa Mobility Wireless, Inc. | Wireless |
| (303) 506 | Weld | Fort Lupton | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 507 | Boulder | Boulder | Sprint Spectrum L.p. | Wireless |
| (303) 508 | Denver | Denver | American Messaging (am), Inc. | Wireless |
| (303) 509 | Denver | Denver | American Messaging (am), Inc. | Wireless |
| (303) 510 | Denver | Denver | American Messaging (am), Inc. | Wireless |
| (303) 512 | Denver | Denver | Qwest Corporation | Landline |
| (303) 513 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 514 | Jefferson | Denver | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 515 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 516 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 517 | Arapahoe | Aurora | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 518 | Denver | Denver | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 519 | Denver | Denver | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 520 | Jefferson | Arvada | Sprint Spectrum L.p. | Wireless |
| (303) 521 | Jefferson | Arvada | Sprint Spectrum L.p. | Wireless |
| (303) 522 | Arapahoe | Aurora | Sprint Spectrum L.p. | Wireless |
| (303) 523 | Arapahoe | Aurora | T-mobile Usa, Inc. | Wireless |
| (303) 524 | Denver | Denver | Teleport Communications Group - Co | Landline |
| (303) 525 | Jefferson | Arvada | Sprint Spectrum L.p. | Wireless |
| (303) 526 | Jefferson | Evergreen | Qwest Corporation | Landline |
| (303) 527 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 528 | Denver | Denver | American Messaging (am), Inc. | Wireless |
| (303) 529 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 530 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 531 | Jefferson | Denver | Mcimetro, Ats, Inc. | Landline |
| (303) 532 | Boulder | Longmont | Mcleodusa Telecommunications Services, Inc.- Co | Landline |
| (303) 533 | Jefferson | Broomfield | Qwest Corporation | Landline |
| (303) 534 | Denver | Denver | Qwest Corporation | Landline |
| (303) 535 | Weld | Fort Lupton | Landline | |
| (303) 536 | Weld | Brighton | Qwest Corporation | Landline |
| (303) 537 | Adams | Aurora | Teleport Communications Group - Co | Landline |
| (303) 538 | Adams | Denver | Qwest Corporation | Landline |
| (303) 539 | Boulder | Boulder | Xo Colorado, Llc | Landline |
| (303) 540 | Jefferson | Arvada | Usa Mobility Wireless, Inc. | Wireless |
| (303) 541 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 542 | Denver | Denver | Mcimetro, Ats, Inc. | Landline |
| (303) 543 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 544 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 545 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 546 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 547 | Denver | Denver | Global Crossing Local Services, Inc.-co | Landline |
| (303) 548 | Jefferson | Arvada | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 549 | Douglas | Castle Rock | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 550 | Arapahoe | Aurora | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 551 | Boulder | Louisville | Mcimetro, Ats, Inc. | Landline |
| (303) 552 | Jefferson | Wheat Ridge | Global Crossing Local Services, Inc.-co | Landline |
| (303) 553 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 554 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 556 | Denver | Denver | Qwest Corporation | Landline |
| (303) 557 | Adams | Aurora | Global Crossing Local Services, Inc.-co | Landline |
| (303) 558 | Weld | Brighton | Global Crossing Local Services, Inc.-co | Landline |
| (303) 559 | Arapahoe | Littleton | American Messaging (am), Inc. | Wireless |
| (303) 560 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 561 | Denver | Denver | Qwest Corporation | Landline |
| (303) 562 | Arapahoe | Englewood | Global Crossing Local Services, Inc.-co | Landline |
| (303) 563 | Adams | Aurora | Icg Telecom Group - Co | Landline |
| (303) 564 | Arapahoe | Aurora | T-mobile Usa, Inc. | Wireless |
| (303) 565 | Denver | Denver | Cbeyond Communications, Llc-co | Landline |
| (303) 566 | Broomfield | Broomfield | Mcimetro, Ats, Inc. | Landline |
| (303) 567 | Clear Creek | Dumont | Qwest Corporation | Landline |
| (303) 568 | Jefferson | Arvada | Teleport Communications Group - Co | Landline |
| (303) 569 | Clear Creek | Empire | Qwest Corporation | Landline |
| (303) 570 | Adams | Aurora | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 571 | Denver | Denver | Qwest Corporation | Landline |
| (303) 572 | Denver | Denver | Qwest Corporation | Landline |
| (303) 573 | Denver | Denver | Qwest Corporation | Landline |
| (303) 574 | Denver | Denver | Qwest Corporation | Landline |
| (303) 575 | Denver | Denver | Qwest Corporation | Landline |
| (303) 576 | Denver | Denver | Qwest Corporation | Landline |
| (303) 577 | Arapahoe | Aurora | Eschelon Telecom Of Colorado, Inc. - Co | Landline |
| (303) 578 | Weld | Keenesburg | Level 3 Communications, Llc - Co | N/A |
| (303) 579 | Boulder | Boulder | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 580 | Jefferson | Pine | American Messaging (am), Inc. | Wireless |
| (303) 581 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 582 | Gilpin | Black Hawk | Qwest Corporation | Landline |
| (303) 583 | Boulder | Boulder | Teleport Communications Group - Co | Landline |
| (303) 584 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 585 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 586 | Denver | 4dvision, Llc - Co | N/A | |
| (303) 587 | Jefferson | Arvada | Sprint Spectrum L.p. | Wireless |
| (303) 588 | Boulder | Boulder | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 589 | Boulder | Boulder | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 590 | Jefferson | Golden | Icg Telecom Group - Co | Landline |
| (303) 591 | Broomfield | Broomfield | Nextel Communications, Inc. | Wireless |
| (303) 592 | Denver | Denver | Qwest Corporation | Landline |
| (303) 593 | Douglas | Parker | Teleport Communications Group - Co | Landline |
| (303) 594 | Adams | Aurora | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 595 | Denver | Denver | Qwest Corporation | Landline |
| (303) 596 | Arapahoe | Aurora | Sprint Spectrum L.p. | Wireless |
| (303) 597 | Arapahoe | Aurora | Eschelon Telecom Of Colorado, Inc. - Co | Landline |
| (303) 598 | Jefferson | Denver | Nextel Communications, Inc. | Wireless |
| (303) 599 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 600 | Arapahoe | Aurora | Teleport Communications Group - Co | Landline |
| (303) 601 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 602 | Denver | Denver | Qwest Corporation | Landline |
| (303) 603 | Denver | Denver | Qwest Corporation | Landline |
| (303) 604 | Boulder | Erie | Qwest Corporation | Landline |
| (303) 605 | Denver | Denver | Qwest Corporation | Landline |
| (303) 606 | Denver | Denver | Qwest Corporation | Landline |
| (303) 607 | Denver | Denver | Qwest Corporation | Landline |
| (303) 608 | Denver | Denver | Qwest Corporation | Landline |
| (303) 609 | Elbert | Elizabeth | Usa Mobility Wireless, Inc. | Wireless |
| (303) 610 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 612 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 613 | Arapahoe | Aurora | Usa Mobility Wireless, Inc. | Wireless |
| (303) 614 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 615 | Denver | Denver | Qwest Corporation | Landline |
| (303) 616 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 617 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 618 | Adams | Aurora | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 619 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 620 | Denver | Denver | Qwest Corporation | Landline |
| (303) 621 | Arapahoe | Deer Trail | Qwest Corporation | Landline |
| (303) 622 | Adams | Strasburg | Strasburg Telephone Co. | Landline |
| (303) 623 | Denver | Denver | Qwest Corporation | Landline |
| (303) 624 | Denver | Denver | Qwest Corporation | Landline |
| (303) 625 | Denver | Denver | Icg Telecom Group - Co | Landline |
| (303) 626 | Denver | Denver | Qwest Corporation | Landline |
| (303) 627 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 628 | Denver | Denver | Qwest Corporation | Landline |
| (303) 629 | Denver | Denver | Qwest Corporation | Landline |
| (303) 630 | Denver | Denver | Qwest Corporation | Landline |
| (303) 631 | Denver | Denver | Landline | |
| (303) 632 | Arapahoe | Aurora | Teleport Communications Group - Co | Landline |
| (303) 633 | Adams | Denver | Qwest Corporation | Landline |
| (303) 634 | Denver | Denver | Qwest Corporation | Landline |
| (303) 635 | Jefferson | Broomfield | Qwest Corporation | Landline |
| (303) 636 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 637 | Weld | Brighton | Qwest Corporation | Landline |
| (303) 638 | Arapahoe | Aurora | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 639 | Denver | Denver | Qwest Corporation | Landline |
| (303) 640 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 641 | Boulder | Boulder | Sprint Spectrum L.p. | Wireless |
| (303) 642 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 643 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 644 | Adams | Bennett | Eastern Slope Rural Telephone Association, Inc. | Landline |
| (303) 645 | Denver | Denver | Qwest Corporation | Landline |
| (303) 646 | Elbert | Elizabeth | Qwest Corporation | Landline |
| (303) 647 | Douglas | Sedalia | Qwest Corporation | Landline |
| (303) 648 | El Paso | Elbert | Qwest Corporation | Landline |
| (303) 649 | Douglas | Castle Rock | Qwest Corporation | Landline |
| (303) 650 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 651 | Larimer | Berthoud | Qwest Corporation | Landline |
| (303) 652 | Boulder | Longmont | Qwest Corporation | Landline |
| (303) 653 | Denver | Denver | Icg Telecom Group - Co | Landline |
| (303) 654 | Adams | Brighton | Qwest Corporation | Landline |
| (303) 655 | Weld | Brighton | Qwest Corporation | Landline |
| (303) 656 | Jefferson | Evergreen | Big River Telephone Company, Llc - Mo | Wireless |
| (303) 657 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 658 | Jefferson | Denver | Qwest Corporation | Wireless |
| (303) 659 | Weld | Brighton | Qwest Corporation | Landline |
| (303) 660 | Douglas | Castle Rock | Qwest Corporation | Landline |
| (303) 661 | Boulder | Erie | Qwest Corporation | Landline |
| (303) 662 | Douglas | Castle Rock | Qwest Corporation | Landline |
| (303) 663 | Douglas | Castle Rock | Qwest Corporation | Landline |
| (303) 664 | Boulder | Erie | Qwest Corporation | Landline |
| (303) 665 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 666 | Boulder | Erie | Qwest Corporation | Landline |
| (303) 667 | Arapahoe | Aurora | T-mobile Usa, Inc. | Wireless |
| (303) 668 | Jefferson | Arvada | T-mobile Usa, Inc. | Wireless |
| (303) 669 | Arapahoe | Aurora | T-mobile Usa, Inc. | Wireless |
| (303) 670 | Jefferson | Conifer | Qwest Corporation | Landline |
| (303) 671 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 672 | Denver | Denver | Qwest Corporation | Landline |
| (303) 673 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 674 | Jefferson | Conifer | Qwest Corporation | Landline |
| (303) 675 | Denver | Denver | Qwest Corporation | Landline |
| (303) 676 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 677 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 678 | Boulder | Longmont | Qwest Corporation | Landline |
| (303) 679 | Jefferson | Conifer | Qwest Corporation | Landline |
| (303) 680 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 681 | Douglas | Castle Rock | Qwest Corporation | Landline |
| (303) 682 | Boulder | Longmont | Qwest Corporation | Landline |
| (303) 683 | Denver | Denver | Qwest Corporation | Landline |
| (303) 684 | Boulder | Longmont | Qwest Corporation | Landline |
| (303) 685 | Jefferson | Conifer | Qwest Corporation | Landline |
| (303) 686 | Arapahoe | Aurora | Usa Mobility Wireless, Inc. | Wireless |
| (303) 687 | Boulder | Boulder | Usa Mobility Wireless, Inc. | Wireless |
| (303) 688 | Douglas | Castle Rock | Qwest Corporation | Landline |
| (303) 689 | Denver | Denver | Qwest Corporation | Landline |
| (303) 690 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 691 | Denver | Denver | Qwest Corporation | Landline |
| (303) 692 | Denver | Denver | Qwest Corporation | Landline |
| (303) 693 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 694 | Denver | Denver | Qwest Corporation | Landline |
| (303) 695 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 696 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 697 | Jefferson | Conifer | Qwest Corporation | Landline |
| (303) 698 | Denver | Denver | Qwest Corporation | Landline |
| (303) 699 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 701 | Denver | Denver | Communications Unlimited | Wireless |
| (303) 702 | Boulder | Longmont | Qwest Corporation | Landline |
| (303) 703 | Denver | Denver | Qwest Corporation | Landline |
| (303) 704 | Jefferson | Golden | Mcimetro, Ats, Inc. | Landline |
| (303) 705 | Adams | Denver | Qwest Corporation | Landline |
| (303) 706 | Douglas | Castle Rock | Qwest Corporation | Landline |
| (303) 707 | Denver | Denver | Qwest Corporation | Landline |
| (303) 708 | Douglas | Castle Rock | Qwest Corporation | Landline |
| (303) 709 | Weld | Longmont | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 710 | Weld | Fort Lupton | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 712 | Arapahoe | Littleton | Qwest Corporation | Landline |
| (303) 713 | Denver | Denver | Qwest Corporation | Landline |
| (303) 714 | Denver | Denver | Qwest Corporation | Landline |
| (303) 715 | Denver | Denver | Qwest Corporation | Landline |
| (303) 716 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 717 | Jefferson | Broomfield | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 718 | Weld | Fort Lupton | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 719 | Arapahoe | Deer Trail | Ymax Communications Corp. - Co | N/A |
| (303) 720 | Fort Lupton | Cellco Partnership Dba Verizon Wireless - Co | N/A | |
| (303) 721 | Denver | Denver | Qwest Corporation | Landline |
| (303) 722 | Denver | Denver | Qwest Corporation | Landline |
| (303) 723 | Denver | Denver | Teleport Communications Group - Co | Landline |
| (303) 724 | Jefferson | Golden | Qwest Corporation | Landline |
| (303) 725 | Denver | Denver | Sprint Spectrum L.p. | Wireless |
| (303) 726 | Arapahoe | Englewood | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 727 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 728 | Arapahoe | Englewood | Teleport Communications Group - Co | Landline |
| (303) 729 | Denver | Denver | Mcimetro, Ats, Inc. | Landline |
| (303) 730 | Denver | Denver | Qwest Corporation | Landline |
| (303) 731 | Arapahoe | Aurora | Level 3 Communications, Llc - Co | Landline |
| (303) 732 | Broomfield | Broomfield | Qwest Corporation | Landline |
| (303) 733 | Denver | Denver | Qwest Corporation | Landline |
| (303) 734 | Denver | Denver | Qwest Corporation | Landline |
| (303) 735 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 736 | Jefferson | Arvada | Teleport Communications Group - Co | Landline |
| (303) 737 | Arapahoe | Englewood | Qwest Corporation | Landline |
| (303) 738 | Denver | Denver | Qwest Corporation | Landline |
| (303) 739 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 740 | Denver | Denver | Qwest Corporation | Landline |
| (303) 741 | Denver | Denver | Qwest Corporation | Landline |
| (303) 742 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 743 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 744 | Denver | Denver | Qwest Corporation | Landline |
| (303) 745 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 746 | Weld | Longmont | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 747 | Boulder | Allenspark | Qwest Corporation | Landline |
| (303) 748 | Arapahoe | Aurora | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 749 | Arapahoe | Englewood | Teleport Communications Group - Co | Landline |
| (303) 750 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 751 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 752 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 753 | Denver | Denver | Qwest Corporation | Landline |
| (303) 754 | Adams | Aurora | Qwest Corporation | Landline |
| (303) 755 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 756 | Denver | Denver | Qwest Corporation | Landline |
| (303) 757 | Denver | Denver | Qwest Corporation | Landline |
| (303) 758 | Denver | Denver | Qwest Corporation | Landline |
| (303) 759 | Denver | Denver | Qwest Corporation | Landline |
| (303) 760 | Arapahoe | Aurora | Usa Mobility Wireless, Inc. | Wireless |
| (303) 761 | Denver | Denver | Qwest Corporation | Landline |
| (303) 762 | Denver | Denver | Qwest Corporation | Landline |
| (303) 763 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 764 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 765 | Denver | Denver | Qwest Corporation | Landline |
| (303) 766 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 767 | Weld | Dacono | Contact Paging Of Colorado, Inc. | Wireless |
| (303) 768 | Douglas | Castle Rock | Qwest Corporation | Landline |
| (303) 769 | Arapahoe | Deer Trail | Bijou Telephone Cooperative Association, Inc. | Landline |
| (303) 770 | Denver | Denver | Qwest Corporation | Landline |
| (303) 771 | Denver | Denver | Qwest Corporation | Landline |
| (303) 772 | Boulder | Longmont | Qwest Corporation | Landline |
| (303) 773 | Denver | Denver | Qwest Corporation | Landline |
| (303) 774 | Boulder | Longmont | Qwest Corporation | Landline |
| (303) 775 | Denver | Denver | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 776 | Boulder | Longmont | Qwest Corporation | Landline |
| (303) 777 | Denver | Denver | Qwest Corporation | Landline |
| (303) 778 | Denver | Denver | Qwest Corporation | Landline |
| (303) 779 | Denver | Denver | Qwest Corporation | Landline |
| (303) 780 | Denver | Denver | Qwest Corporation | Landline |
| (303) 781 | Denver | Denver | Qwest Corporation | Landline |
| (303) 782 | Denver | Denver | Qwest Corporation | Landline |
| (303) 783 | Denver | Denver | Qwest Corporation | Landline |
| (303) 784 | Denver | Denver | Qwest Corporation | Landline |
| (303) 785 | Arapahoe | Aurora | Xo Colorado, Llc | Landline |
| (303) 786 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 787 | Denver | Denver | Qwest Corporation | Landline |
| (303) 788 | Denver | Denver | Qwest Corporation | Landline |
| (303) 789 | Denver | Denver | Qwest Corporation | Landline |
| (303) 790 | Douglas | Castle Rock | Qwest Corporation | Landline |
| (303) 791 | Denver | Denver | Qwest Corporation | Landline |
| (303) 792 | Douglas | Castle Rock | Qwest Corporation | Landline |
| (303) 793 | Denver | Denver | Qwest Corporation | Landline |
| (303) 794 | Denver | Denver | Qwest Corporation | Landline |
| (303) 795 | Denver | Denver | Qwest Corporation | Landline |
| (303) 796 | Denver | Denver | Qwest Corporation | Landline |
| (303) 797 | Denver | Denver | Qwest Corporation | Landline |
| (303) 798 | Denver | Denver | Qwest Corporation | Landline |
| (303) 799 | Douglas | Castle Rock | Qwest Corporation | Landline |
| (303) 800 | Denver | Denver | Level 3 Communications, Llc - Co | Landline |
| (303) 801 | Boulder | Boulder | Mcimetro, Ats, Inc. | Landline |
| (303) 802 | Arapahoe | Englewood | Mcimetro, Ats, Inc. | Landline |
| (303) 803 | Denver | Denver | Time Warner Telecom Of Colorado Llc-co | Landline |
| (303) 804 | Denver | Denver | Qwest Corporation | Landline |
| (303) 805 | Douglas | Parker | Qwest Corporation | Landline |
| (303) 806 | Denver | Denver | Qwest Corporation | Landline |
| (303) 807 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 808 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 809 | Jefferson | Arvada | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 810 | Adams | Aurora | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 812 | Denver | Denver | Qwest Corporation | Landline |
| (303) 813 | Denver | Denver | Qwest Corporation | Landline |
| (303) 814 | Douglas | Castle Rock | Qwest Corporation | Landline |
| (303) 815 | Denver | Denver | Interlink Adv Svc D/b/a Forethought.net - Co | Landline |
| (303) 816 | Park | Bailey | Qwest Corporation | Landline |
| (303) 817 | Boulder | Boulder | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 818 | Boulder | Boulder | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 819 | Denver | Denver | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 820 | Denver | Denver | Qwest Corporation | Landline |
| (303) 821 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 822 | Arapahoe | Byers | Bijou Telephone Cooperative Association, Inc. | Landline |
| (303) 823 | Boulder | Longmont | Qwest Corporation | Landline |
| (303) 824 | Arapahoe | Aurora | Teleport Communications Group - Co | Landline |
| (303) 825 | Denver | Denver | Qwest Corporation | Landline |
| (303) 826 | Arapahoe | Aurora | Usa Mobility Wireless, Inc. | Wireless |
| (303) 827 | Boulder | Longmont | Icg Telecom Group - Co | Landline |
| (303) 828 | Boulder | Erie | Qwest Corporation | Landline |
| (303) 829 | Jefferson | Arvada | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 830 | Denver | Denver | Qwest Corporation | Landline |
| (303) 831 | Denver | Denver | Qwest Corporation | Landline |
| (303) 832 | Denver | Denver | Qwest Corporation | Landline |
| (303) 833 | Weld | Dacono | Qwest Corporation | Landline |
| (303) 834 | Arapahoe | Aurora | Cellco Partnership Dba Verizon Wireless - Co | Landline |
| (303) 835 | Adams | Brighton | Level 3 Communications, Llc - Co | Landline |
| (303) 836 | Denver | Denver | Communications Unlimited | Wireless |
| (303) 837 | Denver | Denver | Qwest Corporation | Landline |
| (303) 838 | Park | Bailey | Qwest Corporation | Landline |
| (303) 839 | Denver | Denver | Qwest Corporation | Landline |
| (303) 840 | Douglas | Parker | Qwest Corporation | Landline |
| (303) 841 | Douglas | Franktown | Qwest Corporation | Landline |
| (303) 842 | Denver | Denver | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 843 | Denver | Denver | Qwest Corporation | Landline |
| (303) 844 | Denver | Denver | Qwest Corporation | Landline |
| (303) 845 | Boulder | Longmont | Teleport Communications Group - Co | Landline |
| (303) 846 | Denver | Denver | Qwest Corporation | Landline |
| (303) 847 | Denver | Denver | Level 3 Communications, Llc - Co | Landline |
| (303) 848 | Weld | Longmont | Icg Telecom Group - Co | Landline |
| (303) 849 | Weld | Roggen | Roggen Telephone Cooperative Co. | Landline |
| (303) 850 | Denver | Denver | Qwest Corporation | Landline |
| (303) 851 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 852 | Jefferson | Arvada | Usa Mobility Wireless, Inc. | Wireless |
| (303) 853 | Adams | Commerce City | Qwest Corporation | Landline |
| (303) 854 | Jefferson | Denver | Icg Telecom Group - Co | Landline |
| (303) 855 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 856 | Arapahoe | Englewood | Icg Telecom Group - Co | Landline |
| (303) 857 | Weld | Brighton | Qwest Corporation | Landline |
| (303) 858 | Douglas | Castle Rock | Qwest Corporation | Landline |
| (303) 859 | Arapahoe | Aurora | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 860 | Denver | Denver | Qwest Corporation | Landline |
| (303) 861 | Denver | Denver | Qwest Corporation | Landline |
| (303) 862 | Denver | Denver | Comcast Phone Of Colorado, Llc - Co | Landline |
| (303) 863 | Denver | Denver | Qwest Corporation | Landline |
| (303) 864 | Denver | Denver | Qwest Corporation | Landline |
| (303) 865 | Denver | Denver | Icg Telecom Group - Co | Landline |
| (303) 866 | Denver | Denver | Qwest Corporation | Landline |
| (303) 867 | Denver | Denver | Iloka, Inc. Dba Microtech-tel - Co | Landline |
| (303) 868 | Denver | Denver | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 869 | Denver | Denver | Qwest Corporation | Landline |
| (303) 870 | Jefferson | Arvada | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 871 | Denver | Denver | Qwest Corporation | Landline |
| (303) 872 | Adams | Denver | Level 3 Communications, Llc - Co | Landline |
| (303) 873 | Arapahoe | Aurora | Qwest Corporation | Landline |
| (303) 874 | Denver | Denver | Icg Telecom Group - Co | Landline |
| (303) 875 | Boulder | Boulder | T-mobile Usa, Inc. | Wireless |
| (303) 876 | Boulder | Louisville | Mcimetro, Ats, Inc. | Landline |
| (303) 877 | Denver | Denver | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 878 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 879 | Arapahoe | Aurora | Usa Mobility Wireless, Inc. | Wireless |
| (303) 880 | Denver | Denver | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 881 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 882 | Jefferson | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 883 | Arapahoe | Aurora | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 884 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 885 | Adams | Commerce City | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 886 | Arapahoe | Aurora | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 887 | Arapahoe | Aurora | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 888 | Jefferson | Arvada | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 889 | Denver | Denver | Qwest Corporation | Landline |
| (303) 890 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 891 | Jefferson | Littleton | Usa Mobility Wireless, Inc. | Wireless |
| (303) 892 | Denver | Denver | Qwest Corporation | Landline |
| (303) 893 | Denver | Denver | Qwest Corporation | Landline |
| (303) 894 | Denver | Denver | Qwest Corporation | Landline |
| (303) 895 | Arapahoe | Englewood | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 896 | Denver | Denver | Qwest Corporation | Landline |
| (303) 897 | Denver | Denver | Usa Mobility Wireless, Inc. | Wireless |
| (303) 898 | Jefferson | Arvada | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 899 | Denver | Denver | Qwest Corporation | Landline |
| (303) 900 | Clear Creek | Idaho Springs | Level 3 Communications, Llc - Co | N/A |
| (303) 901 | Arapahoe | Aurora | Nextel Communications, Inc. | Wireless |
| (303) 902 | Park | Bailey | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 903 | Jefferson | Arvada | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 904 | Denver | Denver | Qwest Corporation | Landline |
| (303) 905 | Arapahoe | Aurora | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 906 | Jefferson | Arvada | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 907 | Jefferson | Arvada | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 908 | Arapahoe | Aurora | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 909 | Jefferson | Conifer | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 910 | Jefferson | Golden | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 912 | Jefferson | Arvada | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 913 | Jefferson | Arvada | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 914 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 915 | Jefferson | Arvada | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 916 | Park | Bailey | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 917 | Denver | Denver | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 918 | Boulder | Boulder | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 919 | Jefferson | Denver | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 920 | Adams | Brighton | Qwest Corporation | Landline |
| (303) 921 | Arapahoe | Aurora | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 922 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 923 | Arapahoe | Aurora | Icg Telecom Group - Co | Landline |
| (303) 924 | Denver | Denver | Qwest Corporation | Landline |
| (303) 925 | Douglas | Castle Rock | Qwest Corporation | Landline |
| (303) 926 | Boulder | Erie | Qwest Corporation | Landline |
| (303) 927 | Arapahoe | Aurora | Teleport Communications Group - Co | Landline |
| (303) 928 | Boulder | Boulder | Mcimetro, Ats, Inc. | Landline |
| (303) 929 | Jefferson | Arvada | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 930 | Denver | Denver | Qwest Corporation | Landline |
| (303) 931 | Arapahoe | Aurora | T-mobile Usa, Inc. | Wireless |
| (303) 932 | Denver | Denver | Qwest Corporation | Landline |
| (303) 933 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 934 | Denver | Denver | Qwest Corporation | Landline |
| (303) 935 | Denver | Denver | Qwest Corporation | Landline |
| (303) 936 | Denver | Denver | Qwest Corporation | Landline |
| (303) 937 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 938 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 939 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 940 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 941 | Jefferson | Arvada | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 942 | Jefferson | Denver | Teleport Communications Group - Co | Landline |
| (303) 943 | Denver | Denver | Nextwave Telecom, Inc Dba Nextwave Wireless | Wireless |
| (303) 944 | Denver | Denver | Nextel Communications, Inc. | Wireless |
| (303) 945 | Denver | Denver | Comcast Phone Of Colorado, Llc - Co | Landline |
| (303) 946 | Arapahoe | Aurora | Sprint Spectrum L.p. | Wireless |
| (303) 947 | Boulder | Boulder | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 948 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 949 | Jefferson | Arvada | Sprint Spectrum L.p. | Wireless |
| (303) 951 | Denver | Denver | Level 3 Communications, Llc - Co | Landline |
| (303) 952 | Denver | Denver | Level 3 Communications, Llc - Co | Landline |
| (303) 953 | Denver | Denver | Level 3 Communications, Llc - Co | Landline |
| (303) 954 | Denver | Denver | Level 3 Communications, Llc - Co | Landline |
| (303) 955 | Denver | Denver | Global Crossing Local Services, Inc.-co | Landline |
| (303) 956 | Weld | Fort Lupton | New Cingular Wireless Pcs, Llc | Wireless |
| (303) 957 | Arapahoe | Englewood | Global Crossing Local Services, Inc.-co | Landline |
| (303) 960 | Denver | Denver | T-mobile Usa, Inc. | Wireless |
| (303) 961 | Adams | Commerce City | Nextel Communications, Inc. | Wireless |
| (303) 962 | Denver | Denver | Cbeyond Communications, Llc-co | Landline |
| (303) 963 | Jefferson | Denver | Icg Telecom Group - Co | Landline |
| (303) 964 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 965 | Denver | Denver | Qwest Corporation | Landline |
| (303) 966 | Jefferson | Golden | Qwest Corporation | Landline |
| (303) 967 | Arapahoe | Englewood | Qwest Corporation | Landline |
| (303) 968 | Denver | Denver | Mcimetro, Ats, Inc. | Landline |
| (303) 969 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 971 | Denver | Denver | Qwest Corporation | Landline |
| (303) 972 | Adams | Denver | Qwest Corporation | Landline |
| (303) 973 | Adams | Denver | Qwest Corporation | Landline |
| (303) 974 | Jefferson | Golden | Global Crossing Local Services, Inc.-co | Landline |
| (303) 975 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 977 | Denver | Denver | Qwest Corporation | Landline |
| (303) 978 | Adams | Denver | Qwest Corporation | Landline |
| (303) 979 | Adams | Denver | Qwest Corporation | Landline |
| (303) 980 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 981 | Denver | Denver | Cellco Partnership Dba Verizon Wireless - Co | Wireless |
| (303) 982 | Jefferson | Arvada | Qwest Corporation | Landline |
| (303) 984 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 985 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 986 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 987 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 988 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 989 | Jefferson | Denver | Qwest Corporation | Landline |
| (303) 990 | Weld | Fort Lupton | Nextel Communications, Inc. | N/A |
| (303) 991 | Denver | Denver | Allegiance Telecom Of Colorado, Inc. | Landline |
| (303) 992 | Denver | Denver | Qwest Corporation | Landline |
| (303) 993 | Denver | Denver | Neutral Tandem-colorado, Llc - Co | N/A |
| (303) 994 | Denver | Denver | Nextel Communications, Inc. | Wireless |
| (303) 995 | Arapahoe | Aurora | Sprint Spectrum L.p. | Wireless |
| (303) 996 | Denver | Denver | Eschelon Telecom Of Colorado, Inc. - Co | Landline |
| (303) 997 | Denver | Denver | Pac - West Telecomm, Inc. - Co | Landline |
| (303) 998 | Boulder | Boulder | Qwest Corporation | Landline |
| (303) 999 | Denver | Comcast Phone Of Colorado, Llc - Co | N/A |
Want to Know more about area code 303?
3,963,060
Total Number of Phone Numbers with +1-3032,157,966
Total Number of Owners with +1-3033,303
Total Number of carriers in the area code137
Total Number of cities in the area code79/21
% of Landline vs Wireless phone numbersN/A
Average Age$177,510
Medium Home value$48,789
Median Income600,158
Total population0.71%
Crime RateCounties that Use Area Code 303
Boulder
Jefferson
Adams
Gilpin
Broomfield
Arapahoe
Douglas
Fremont
Weld
El Paso
Elbert
Clear Creek
Lake
Current time in 203 Area Code
4:43 AM on Apr 19, 2024
The 303 area code lies within the Pacific Daylight Time Zone (or PDT)