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 11:02:13 PM on December 21, 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 |
|---|---|---|
| 603-200 | Newmarket, NH | Comcast Ip Phone, Llc |
| 603-201 | New Hampshire | |
| 603-203 | Manchester, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-204 | Nashua, NH | United States Cellular - Nh |
| 603-205 | Portsmouth, NH | Omnipoint Miami E License, Llc |
| 603-206 | Manchester, NH | Paetec Communications, Inc. - Nh |
| 603-207 | New Hampshire | |
| 603-208 | Lyme, NH | United States Cellular - Nh |
| 603-209 | Keene, NH | United States Cellular - Nh |
| 603-210 | Suncook, NH | Comcast Ip Phone, Llc |
| 603-211 | New Hampshire | |
| 603-212 | Salem, NH | Consolidated Comm Of No. New England-nh |
| 603-213 | Milford, NH | Comcast Ip Phone, Llc |
| 603-214 | Errol, NH | Freedom Ring Communications, Llc |
| 603-215 | Berlin, NH | Freedom Ring Communications, Llc |
| 603-216 | Derry, NH | Comcast Ip Phone, Llc |
| 603-217 | Bristol, NH | Bell Atlantic Mobile, Inc |
| 603-218 | Manchester, NH | Broadview Networks, Inc. - Nh |
| 603-219 | Concord, NH | Sprint Spectrum, L.p. |
| 603-220 | New Hampshire | |
| 603-221 | Nashua, NH | Consolidated Comm Of No. New England-nh |
| 603-222 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-223 | Concord, NH | Consolidated Comm Of No. New England-nh |
| 603-224 | Concord, NH | Consolidated Comm Of No. New England-nh |
| 603-225 | Concord, NH | Consolidated Comm Of No. New England-nh |
| 603-226 | Concord, NH | Consolidated Comm Of No. New England-nh |
| 603-227 | Concord, NH | Consolidated Comm Of No. New England-nh |
| 603-228 | Concord, NH | Consolidated Comm Of No. New England-nh |
| 603-229 | Concord, NH | Consolidated Comm Of No. New England-nh |
| 603-230 | Concord, NH | Consolidated Comm Of No. New England-nh |
| 603-231 | Derry, NH | Sprint Spectrum, L.p. |
| 603-232 | Manchester, NH | Comcast Ip Phone, Llc |
| 603-233 | Nashua, NH | Omnipoint Miami E License, Llc |
| 603-234 | Derry, NH | Sprint Spectrum, L.p. |
| 603-235 | Derry, NH | Sprint Spectrum, L.p. |
| 603-236 | Campton, NH | Consolidated Comm Of No. New England-nh |
| 603-237 | Colebrook, NH | Consolidated Comm Of No. New England-nh |
| 603-238 | Plymouth, NH | Paetec Communications, Inc. - Nh |
| 603-239 | Winchester, NH | Consolidated Comm Of No. New England-nh |
| 603-240 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-241 | Dover, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-242 | Troy, NH | Consolidated Comm Of No. New England-nh |
| 603-243 | Woodsville, NH | Charter Fiberlink Nh-cco-llc - Nh |
| 603-244 | Raymond, NH | Comcast Ip Phone, Llc |
| 603-245 | Portsmouth, NH | Consolidated Comm Of No. New England-nh |
| 603-246 | West Stewartstown, NH | Consolidated Comm Of No. New England-nh |
| 603-247 | Derry, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-248 | Dover, NH | Consolidated Comm Of No. New England-nh |
| 603-249 | Milford, NH | Consolidated Comm Of No. New England-nh |
| 603-250 | Center Harbor, NH | Freedom Ring Communications, Llc |
| 603-251 | Charlestown, NH | Paetec Communications, Inc. - Nh |
| 603-252 | West Lebanon, NH | United States Cellular - Nh |
| 603-253 | Center Harbor, NH | Consolidated Comm Of No. New England-nh |
| 603-254 | Plymouth, NH | United States Cellular - Nh |
| 603-255 | Manchester, NH | Csc Wireless, Llc |
| 603-256 | West Chesterfield, NH | Consolidated Comm Of No. New England-nh |
| 603-257 | Plaistow, NH | Freedom Ring Communications, Llc |
| 603-258 | Hollis, NH | Metropcs, Inc. |
| 603-259 | Littleton, NH | Level 3 Communications, Llc - Nh |
| 603-260 | Derry, NH | Comcast Ip Phone, Llc |
| 603-261 | Merrimack, NH | United States Cellular - Nh |
| 603-262 | Merrimack, NH | Consolidated Comm Of No. New England-nh |
| 603-263 | Manchester, NH | Peerless Network Of New Hampshire, Llc - Nh |
| 603-264 | Manchester, NH | Omnipoint Miami E License, Llc |
| 603-265 | New Boston, NH | Omnipoint Miami E License, Llc |
| 603-266 | Tilton, NH | Consolidated Comm Of No. New England-nh |
| 603-267 | Belmont, NH | Consolidated Comm Of No. New England-nh |
| 603-268 | Suncook, NH | Consolidated Comm Of No. New England-nh |
| 603-269 | Center Barnstead, NH | Union Tel. Co. |
| 603-270 | Suncook, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-271 | Concord, NH | Consolidated Comm Of No. New England-nh |
| 603-272 | Piermont, NH | Consolidated Comm Of No. New England-nh |
| 603-273 | Laconia, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-274 | South Hampton, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-275 | Derry, NH | Omnipoint Miami E License, Llc |
| 603-276 | West Lebanon, NH | Bell Atlantic Mobile, Inc |
| 603-277 | Hanover, NH | Comcast Ip Phone, Llc |
| 603-278 | Bretton Woods, NH | Bretton Woods Tel. Co. |
| 603-279 | Meredith, NH | Consolidated Comm Of No. New England-nh |
| 603-280 | Barrington, NH | Level 3 Communications, Llc - Nh |
| 603-281 | Nashua, NH | Consolidated Comm Of No. New England-nh |
| 603-282 | Canaan, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-283 | Keene, NH | Paetec Communications, Inc. - Nh |
| 603-284 | Center Sandwich, NH | Consolidated Comm Of No. New England-nh |
| 603-285 | Dover, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-286 | Tilton, NH | Consolidated Comm Of No. New England-nh |
| 603-287 | Claremont, NH | Level 3 Communications, Llc - Nh |
| 603-288 | Nashua, NH | Vonage America Llc |
| 603-289 | Manchester, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-290 | Concord, NH | United States Cellular - Nh |
| 603-291 | Greenville, NH | Comcast Ip Phone, Llc |
| 603-292 | Newmarket, NH | Comcast Ip Phone, Llc |
| 603-293 | Laconia, NH | Consolidated Comm Of No. New England-nh |
| 603-294 | Portsmouth, NH | Level 3 Communications, Llc - Nh |
| 603-295 | Durham, NH | Paetec Communications, Inc. - Nh |
| 603-296 | Manchester, NH | Choice One Of New Hampshire, Inc. |
| 603-297 | Center Ossipee, NH | Freedom Ring Communications, Llc |
| 603-298 | West Lebanon, NH | Consolidated Comm Of No. New England-nh |
| 603-299 | Bartlett, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-300 | Chester, NH | Sprint Spectrum, L.p. |
December 20, 2024