Area Code 603 - New Hampshire
Every 603 prefix with its city and carrier. Got a specific number? Search it here.
Area code 603 serves New Hampshire (Eastern time zone) with 752 assigned prefixes. Major rate centers include Manchester, Nashua, Concord, Derry, Dover, Portsmouth, Merrimack, Salem. Received a call from a 603 number? Type the full number into the search box above to see its city, carrier, and community reports.
Prefixes in area code 603
| Prefix | City | State | Carrier |
|---|---|---|---|
| 603-998 | Laconia | NH | METROPCS, INC. |
| 603-999 | Salem | NH | FRACTEL, LLC |
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