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Area Code 425

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Area Code 425is assigned to the state of Washington; the capital of the state is Olympia while Seattle is the largest city. The state of Washington is the 18th largest by size and 13th most populated city in the United States. All eth counties and cities served by this 425 fall into the Pacific Time Zone.

History and Geographical Localities :

Area Code 425 was created on April 27, 1997 when the original code 206 for the Washington state had a third split. 425 after split from 206 was allocated to is areas including Seattle, the islands of Mercer, Bainbridge and Vashon, and parts of the Seattle metro area from Des Moines to Wood way. The Code 206 had a first split into 509 on 1 January 1957. Then second split was announced into 360 on January 15, 1995 and last split into two codes 425 & 253.




  • King
  • Kittitas
  • Snohomish


  • Ames Lake
  • Bellevue
  • Bothell
  • Carnation
  • Duvall
  • Everett
  • Fall City
  • Harbour Pointe
  • Issaquah
  • Kirkland
  • Lynnwood
  • Maple Valley
  • Mukilteo
  • North Bend
  • Redmond
  • Renton
  • Sammamish
  • Silver Lake
  • Snoqualmie Pass

Educational Institutes, ISPs and Telecom Carriers Serving the Area Code:

Universities/Colleges serving area code 425 are:
  • Basic IPS
  • Copper net
  • NetZero
  • AT&T DSL Service
Telecom Carriers:
  • Allpage, Inc.
  • Bellsouth Telecomm Inc DBA South Central Bell TEL
  • Bristol Bay Cellular Partnership
  • Cellco Partnership DBA Verizon Wireless - AZ
  • Mcimetro, Ats, Inc.
  • Network Services LLC
  • Network Telephone Corporation - AL
  • New Cingular Wireless PCS,LLC
  • New Cingular Wireless PCS, LLC - IL
  • O1 Communications, Inc. - CA
  • Pac - West Telecomm, Inc.
  • Pacific Bell
  • Qwest Corporation
  • T-Mobile USA, Inc.
  • Verizon California Inc.-CA (GTE)
  • Xo California, Inc.

Other Area Codes serving the Washington state:

  • 206 - (created on January 1, 1947)
  • 253 - (Created on April 27, 1997)
  • 360 - (Created on January 15, 1995)
  • 564 - (Will overlay 306. Proposed in 1999 but not yet implemented)
  • 509 - (Created on 1 January 1957)
These above last four are splitted from 206 and each serves the different parts of the Washington state.

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