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Area Code 603

603 is the North American Telephone Area Code For New Hampshire in United States.
District of New Hampshire area codes: 603
Country United States
State/Province New Hampshire
Major City Manchester
Time Zone Eastern (UTC-05:00)

Phone directory with area code 603

Prefix County Primary City Company
603-331 Coos Colebrook, NH Level 3 Communications
603-332 Strafford Rochester, NH No New England Tel Op DBA Fairpoint Comm
603-334 Rockingham Portsmouth, NH No New England Tel Op DBA Fairpoint Comm
603-335 Strafford Rochester, NH No New England Tel Op DBA Fairpoint Comm
603-336 Cheshire Hinsdale, NH No New England Tel Op DBA Fairpoint Comm
603-337 Strafford Rochester, NH No New England Tel Op DBA Fairpoint Comm
603-338 Cheshire Keene, NH Brooks Fiber Communications Of New Hampshire
603-339 Rockingham Derry, NH New Cingular Wireless PCS - DC
603-340 Merrimack Suncook, NH Bell Atlantic Nynex Mobile
603-341 Hillsborough Merrimack, NH United States Cellular Corp. - New Hampshire
603-342 Coos Berlin, NH No New England Tel Op DBA Fairpoint Comm
603-343 Strafford Dover, NH Comcast Phone Of New Hampshire
603-344 Merrimack Suncook, NH United States Cellular Corp. - New Hampshire
603-345 Hillsborough Merrimack, NH United States Cellular Corp. - New Hampshire
603-346 Grafton Plymouth, NH Level 3 Communications
603-347 Rockingham Kingston, NH Comcast Phone Of New Hampshire
603-348 Grafton N Woodstock, NH United States Cellular Corp. - New Hampshire
603-349 Grafton W Lebanon, NH United States Cellular Corp. - New Hampshire
603-350 Strafford E Rochester, NH Brooks Fiber Communications Of New Hampshire
603-351 Hillsborough Manchester, NH Brooks Fiber Communications Of New Hampshire
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There are 691 prefixes, In the code area, the major cities are Concord, NH;Derry, NH;Dover, NH;Keene, NH;Manchest. The major city is Manchester.

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