There are 756 phone number prefixes within area code 603. Additionally, there are more than 4,100 phone numbers in this area code that have received at least one user report. The location of calls from area code 603 is New Hampshire, USA. Most numbers in this area code are in US Eastern time, where the time is currently 6:25:59 PM on April 24, 2024.
Choose a phone number from the list below to browse user reports for . You can also use the search box above to search for user reports about any phone number, or to file a report about any phone number.
| Prefix | City / State | Primary Telco |
|---|---|---|
| 603-301 | Center Ossipee, NH | Level 3 Communications, Llc - Nh |
| 603-302 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-303 | Raymond, NH | Bell Atlantic Mobile, Inc |
| 603-304 | Enfield, NH | United States Cellular - Nh |
| 603-305 | Nashua, NH | Bell Atlantic Mobile, Inc |
| 603-306 | Lebanon, NH | Freedom Ring Communications, Llc |
| 603-307 | North Conway, NH | Bell Atlantic Mobile, Inc |
| 603-308 | Hanover, NH | Consolidated Comm Of No. New England-nh |
| 603-309 | Newport, NH | Bell Atlantic Mobile, Inc |
| 603-310 | Bedford, NH | Ctc Communications Corp. - Nh |
| 603-311 | New Hampshire | |
| 603-312 | Dover, NH | Bell Atlantic Mobile, Inc |
| 603-313 | Keene, NH | United States Cellular - Nh |
| 603-314 | Manchester, NH | Lightship Telecom, Llc - Nh |
| 603-315 | Manchester, NH | Bell Atlantic Mobile, Inc |
| 603-316 | Milford, NH | Bell Atlantic Mobile, Inc |
| 603-317 | Milan, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-318 | Nashua, NH | Bell Atlantic Mobile, Inc |
| 603-319 | Portsmouth, NH | Lightship Telecom, Llc - Nh |
| 603-320 | Nashua, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-321 | Nashua, NH | Bell Atlantic Mobile, Inc |
| 603-322 | West Lebanon, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-323 | Tamworth, NH | Consolidated Comm Of No. New England-nh |
| 603-324 | Nashua, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-325 | New Boston, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-326 | Berlin, NH | Level 3 Communications, Llc - Nh |
| 603-327 | Salem, NH | Lightship Telecom, Llc - Nh |
| 603-328 | Salem, NH | Paetec Communications, Inc. - Nh |
| 603-329 | Hampstead, NH | Consolidated Comm Of No. New England-nh |
| 603-330 | Rochester, NH | Consolidated Comm Of No. New England-nh |
| 603-331 | Colebrook, NH | Level 3 Communications, Llc - Nh |
| 603-332 | Rochester, NH | Consolidated Comm Of No. New England-nh |
| 603-333 | Concord, NH | Peerless Network Of New Hampshire, Llc - Nh |
| 603-334 | Portsmouth, NH | Consolidated Comm Of No. New England-nh |
| 603-335 | Rochester, NH | Consolidated Comm Of No. New England-nh |
| 603-336 | Hinsdale, NH | Consolidated Comm Of No. New England-nh |
| 603-337 | Rochester, NH | Consolidated Comm Of No. New England-nh |
| 603-338 | Keene, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-339 | Derry, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-340 | Suncook, NH | Bell Atlantic Mobile, Inc |
| 603-341 | Merrimack, NH | United States Cellular - Nh |
| 603-342 | Berlin, NH | Consolidated Comm Of No. New England-nh |
| 603-343 | Dover, NH | Comcast Ip Phone, Llc |
| 603-344 | Suncook, NH | United States Cellular - Nh |
| 603-345 | Merrimack, NH | United States Cellular - Nh |
| 603-346 | Plymouth, NH | Hd Carrier Llc |
| 603-347 | Kingston, NH | Comcast Ip Phone, Llc |
| 603-348 | North Woodstock, NH | United States Cellular - Nh |
| 603-349 | West Lebanon, NH | United States Cellular - Nh |
| 603-350 | Milton, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-351 | Goffstown, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-352 | Keene, NH | Consolidated Comm Of No. New England-nh |
| 603-353 | Orford, NH | Consolidated Comm Of No. New England-nh |
| 603-354 | Keene, NH | Consolidated Comm Of No. New England-nh |
| 603-355 | Keene, NH | Consolidated Comm Of No. New England-nh |
| 603-356 | North Conway, NH | Consolidated Comm Of No. New England-nh |
| 603-357 | Keene, NH | Consolidated Comm Of No. New England-nh |
| 603-358 | Keene, NH | Consolidated Comm Of No. New England-nh |
| 603-359 | Lebanon, NH | Bell Atlantic Mobile, Inc |
| 603-360 | Orford, NH | Topsham Communications, Llc |
| 603-361 | Manchester, NH | Bell Atlantic Mobile, Inc |
| 603-362 | Hampstead, NH | Consolidated Comm Of No. New England-nh |
| 603-363 | Spofford, NH | Consolidated Comm Of No. New England-nh |
| 603-364 | Gilmanton Iron Works, NH | Union Tel. Co. |
| 603-365 | Merrimack, NH | Sprint Spectrum, L.p. |
| 603-366 | Laconia, NH | Consolidated Comm Of No. New England-nh |
| 603-367 | Madison, NH | Consolidated Comm Of No. New England-nh |
| 603-368 | Portsmouth, NH | Teleport Communications America, Llc - Nh |
| 603-369 | Concord, NH | Level 3 Communications, Llc - Nh |
| 603-370 | Candia, NH | Bell Atlantic Mobile, Inc |
| 603-371 | Peterborough, NH | Conversent Communications Of New Hampshire, Llc |
| 603-372 | Claremont, NH | Freedom Ring Communications, Llc |
| 603-373 | Portsmouth, NH | Conversent Communications Of New Hampshire, Llc |
| 603-374 | Bartlett, NH | Consolidated Comm Of No. New England-nh |
| 603-375 | Ashland, NH | Time Warner Cable Information Svcs (new Hampshire) |
| 603-376 | Dover, NH | American Messaging Services, Llc |
| 603-377 | Merrimack, NH | Omnipoint Miami E License, Llc |
| 603-378 | Plaistow, NH | Consolidated Comm Of No. New England-nh |
| 603-379 | Rye Beach, NH | Level 3 Communications, Llc - Nh |
| 603-380 | Portsmouth, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-381 | West Lebanon, NH | United States Cellular - Nh |
| 603-382 | Plaistow, NH | Consolidated Comm Of No. New England-nh |
| 603-383 | Jackson, NH | Consolidated Comm Of No. New England-nh |
| 603-384 | Goffstown, NH | Comcast Ip Phone, Llc |
| 603-385 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-386 | Salem, NH | Broadview Networks, Inc. - Nh |
| 603-387 | Laconia, NH | Bell Atlantic Mobile, Inc |
| 603-388 | Colebrook, NH | Freedom Ring Communications, Llc |
| 603-389 | Durham, NH | Choice One Of New Hampshire, Inc. |
| 603-390 | Jefferson, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-391 | Manchester, NH | Teleport Communications America, Llc - Nh |
| 603-392 | Winchester, NH | Comcast Ip Phone, Llc |
| 603-393 | Laconia, NH | United States Cellular - Nh |
| 603-394 | South Hampton, NH | Consolidated Comm Of No. New England-nh |
| 603-395 | Exeter, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-396 | Merrimack, NH | Sprint Spectrum, L.p. |
| 603-397 | Durham, NH | Comcast Ip Phone, Llc |
| 603-398 | West Lebanon, NH | United States Cellular - Nh |
| 603-399 | Westmoreland, NH | Consolidated Comm Of No. New England-nh |
| 603-400 | Hollis, NH | Charter Fiberlink Nh-cco-llc - Nh |
April 24, 2024