Area Code 603

Area Code 603 is North American telephone area code for providing services to the New Hampshire State - located in New England region of the United States. The Code is one of the original eighty six area codes created by NANP (North American Numbering Plan) on October 1947.
The Code 603 is the only area code serving the entire State of New Hampshire. It is neither split nor is it ever overlaid. Standard Time Zone followed by area code 603 is Eastern Time Zone. Area Codes surrounding the 603 code are: 

• West: Area Code 802
• North: Area Code 819
• East: Area Code 207
• South: Overlay area codes 351/978, Area Code 413

List of Counties:

• BELKNAP
• CARROLL
• CHESHIRE
• COOS
• GRAFTON
• HILLSBOROUGH
• MERRIMACK
• OXFORD
• ROCKINGHAM
• STRAFFORD
• SULLIVAN
• YORK

List of Cities:

ACWORTH ALSTEAD ALTON ALTON BAY AMHERST ANDOVER ANTRIM ASHLAND ASHUELOT ATKINSON AUBURN BARNSTEAD BARRINGTON BARTLETT BATH BEDFORD BELMONT BENNINGTON BERLIN BETHLEHEM BOW BRADFORD BRETTON WOODS BRISTOL BROOKLINE CAMPTON CANAAN CANDIA CANTERBURY CENTER BARNSTEAD CENTER CONWAY CENTER HARBOR CENTER OSSIPEE CENTER SANDWICH CENTER STRAFFORD CENTER TUFTONBORO CHARLESTOWN CHESTER CHESTERFIELD CHICHESTER CHOCORUA CLAREMONT COLEBROOK CONCORD CONTOOCOOK CONWAY CORNISH CORNISH FLAT DANBURY DANVILLE DEERFIELD DERRY DOVER DREWSVILLE DUBLIN DUNBARTON DURHAM EAST ANDOVER EAST HAMPSTEAD EAST KINGSTON EAST WAKEFIELD EATON CENTER ELKINS ENFIELD EPPING EPSOM ERROL ETNA EXETER FARMINGTON FITZWILLIAM FRANCESTOWN FRANCONIA FRANKLIN FREEDOM FREMONT FRYEBURG GEORGES MILLS GILFORD

GILMANTON GILMANTON IRON WORKS GILSUM GLEN GLENCLIFF GOFFSTOWN GORHAM GOSHEN GRAFTON GRANTHAM GREENFIELD GREENLAND GREENVILLE GROVETON HAMPSTEAD HAMPTON HAMPTON FALLS HANCOCK HANOVER HARRISVILLE HAVERHILL HEBRON HENNIKER HILL HILLSBOROUGH HINSDALE HOLDERNESS HOLLIS HOOKSETT HUDSON INTERVALE JACKSON JAFFREY JEFFERSON KEENE KINGSTON LACONIA LANCASTER LEBANON LEMPSTER LINCOLN LISBON LITCHFIELD LITTLETON LONDONDERRY LOUDON LYME LYME CENTER LYNDEBOROUGH MADISON MANCHESTER MARLBOROUGH MARLOW MELVIN VILLAGE MEREDITH MERIDEN MERRIMACK MILAN MILFORD MILTON MILTON MILLS MIRROR LAKE MONROE MONT VERNON MOULTONBOROUGH NASHUA NELSON NEW BOSTON NEW CASTLE NEW DURHAM NEW HAMPTON NEW IPSWICH NEW LONDON NEWBURY NEWFIELDS NEWMARKET NEWPORT NEWTON NORTH CONWAY

NORTH HAMPTON NORTH HAVERHILL NORTH SALEM NORTH SANDWICH NORTH STRATFORD NORTH SUTTON NORTH WALPOLE NORTH WOODSTOCK NORTHWOOD NOTTINGHAM ORFORD OSSIPEE PELHAM PETERBOROUGH PIERMONT PIKE PITTSBURG PITTSFIELD PLAINFIELD PLAISTOW PLYMOUTH PORTSMOUTH RAYMOND RINDGE ROCHESTER ROLLINSFORD RUMNEY RYE RYE BEACH SALEM SALISBURY SANBORNTON SANBORNVILLE SANDOWN SEABROOK SILVER LAKE SOMERSWORTH SOUTH ACWORTH SOUTH NEWBURY SOUTH SUTTON SOUTH TAMWORTH SPOFFORD SPRINGFIELD STODDARD STRAFFORD STRATHAM SULLIVAN SUNAPEE SUNCOOK SWANZEY TAMWORTH TEMPLE TILTON TROY TWIN MOUNTAIN UNION WALPOLE WARNER WARREN WASHINGTON WATERVILLE VALLEY WEARE WENTWORTH WEST CHESTERFIELD WEST LEBANON WEST OSSIPEE WEST STEWARTSTOWN WEST SWANZEY WESTMORELAND WHITEFIELD WILMOT WILTON WINCHESTER WINDHAM WINNISQUAM WOLFEBORO WONALANCET WOODSTOCK WOODSVILLE

Leading institutions, ISPs and Telephone companies:

Some of the leading educational institutions serving the code 603are:

• Antioch New England Graduate School        (603) 433-2669
• Colby Sawyer College                (603) 526-3000
• Daniel Webster College                (603) 577-6400
• Dartmouth College                (603) 646-1110

Major Telecom companies and Telephone Providers:

• CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ
• CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
• E. RITTER COMMS DBA RITTER COMMUNICATIONS, INC. AR
• MCI WORLDCOM COMMUNICATIONS, INC., CA
• MPOWER NETWORKS SERVICES INC. - CA
• NETWORK SERVICES LLC
• NEW CINGULAR WIRELESS PCS, LLC
• NEW CINGULAR WIRELESS PCS, LLC - GA
• PAC - WEST TELECOMM, INC.
• PACIFIC BELL
• ROYAL STREET COMMUNICATIONS, LLC
• SBC INTERNET SERVICES, INC.
• SOUTHWESTERN BELL
• TIME WARNER TELECOM OF CALIFORNIA, L.P.
• U.S. TELEPACIFIC CORP. - CA
• USA MOBILITY WIRELESS, INC.
• XO ARIZONA, INC.

Some of the ISPs offering dialup and dedicated services to area code 603:

• Dclogic  
• Ddlink
• Del Rio TX Online
• Deltaforce    
• deluxeHOST.com    
• deluxehost.com    
• Design House Technologies Inc.
• Dexo.Net    
• DGUI
• Dial National
• Dial-Up King

Reverse Phone Check for the area code 603:

Reverse Telephone Directory is a tool for providing information associated with the phone numbers. You can extract details from reverse directory if you have phone number along with a three-digit area code.   
Reverse lookup directory is complete database of phone numbers - information of customers is stored in reverse directory against their phone numbers. If you have the phone number, you are no more away from the customer identity using particular phone number.
The only thing you need to do is to access the reverse directory - key in the phone number along with area code and click on the search button. Information on the number provided will be displayed within a second.
Run reverse telephone directory and grab all information associated with particular number. Refine your search by searching into the reverse phone directory maintained for numbers registered with particular area code.
If the number to be searched starts with area code 603 then simply put the phone number into the reverse directory. Access the reverse phone lookup directory, key in the phone number and get the details on the number just by clicking on the search tab.