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 4:00:36 PM on April 19, 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 |
|---|---|---|
| 603-401 | Salem, NH | Bell Atlantic Mobile, Inc |
| 603-402 | Nashua, NH | Bell Atlantic Mobile, Inc |
| 603-403 | Rochester, NH | Comcast Ip Phone, Llc |
| 603-404 | Derry, NH | Bell Atlantic Mobile, Inc |
| 603-405 | Somersworth, NH | Teleport Communications America, Llc - Nh |
| 603-406 | Concord, NH | Omnipoint Miami E License, Llc |
| 603-407 | Belmont, NH | Paetec Communications, Inc. - Nh |
| 603-408 | Berlin, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-409 | Laconia, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-410 | Concord, NH | Conversent Communications Of New Hampshire, Llc |
| 603-411 | New Hampshire | |
| 603-412 | Plymouth, NH | United States Cellular - Nh |
| 603-413 | Manchester, NH | Paetec Communications, Inc. - Nh |
| 603-414 | Sunapee, NH | Tds Metrocom, Llc - Nh |
| 603-415 | Concord, NH | Freedom Ring Communications, Llc |
| 603-416 | Raymond, NH | Omnipoint Miami E License, Llc |
| 603-417 | Nashua, NH | Omnipoint Miami E License, Llc |
| 603-418 | Exeter, NH | Conversent Communications Of New Hampshire, Llc |
| 603-419 | Suncook, NH | United States Cellular - Nh |
| 603-420 | Merrimack, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-421 | Derry, NH | Consolidated Comm Of No. New England-nh |
| 603-422 | Portsmouth, NH | Consolidated Comm Of No. New England-nh |
| 603-423 | Merrimack, NH | Consolidated Comm Of No. New England-nh |
| 603-424 | Merrimack, NH | Consolidated Comm Of No. New England-nh |
| 603-425 | Derry, NH | Consolidated Comm Of No. New England-nh |
| 603-426 | Derry, NH | Consolidated Comm Of No. New England-nh |
| 603-427 | Portsmouth, NH | Consolidated Comm Of No. New England-nh |
| 603-428 | Henniker, NH | Merrimack Co. Telephone Co., Dba Contoocook Valley |
| 603-429 | Merrimack, NH | Consolidated Comm Of No. New England-nh |
| 603-430 | Portsmouth, NH | Consolidated Comm Of No. New England-nh |
| 603-431 | Portsmouth, NH | Consolidated Comm Of No. New England-nh |
| 603-432 | Derry, NH | Consolidated Comm Of No. New England-nh |
| 603-433 | Portsmouth, NH | Consolidated Comm Of No. New England-nh |
| 603-434 | Derry, NH | Consolidated Comm Of No. New England-nh |
| 603-435 | Pittsfield, NH | Consolidated Comm Of No. New England-nh |
| 603-436 | Portsmouth, NH | Consolidated Comm Of No. New England-nh |
| 603-437 | Derry, NH | Consolidated Comm Of No. New England-nh |
| 603-438 | Nashua, NH | Sprint Spectrum, L.p. |
| 603-439 | Keene, NH | Conversent Communications Of New Hampshire, Llc |
| 603-440 | Merrimack, NH | Consolidated Comm Of No. New England-nh |
| 603-441 | Rochester, NH | Comcast Ip Phone, Llc |
| 603-442 | Lebanon, NH | Consolidated Comm Of No. New England-nh |
| 603-443 | Lebanon, NH | Consolidated Comm Of No. New England-nh |
| 603-444 | Littleton, NH | Consolidated Comm Of No. New England-nh |
| 603-445 | North Walpole, NH | Consolidated Comm Of No. New England-nh |
| 603-446 | Marlow, NH | Consolidated Comm Of No. New England-nh |
| 603-447 | Conway, NH | Consolidated Comm Of No. New England-nh |
| 603-448 | Lebanon, NH | Consolidated Comm Of No. New England-nh |
| 603-449 | Milan, NH | Consolidated Comm Of No. New England-nh |
| 603-450 | Concord, NH | Omnipoint Miami E License, Llc |
| 603-451 | Concord, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-452 | Conway, NH | Freedom Ring Communications, Llc |
| 603-453 | Hampstead, NH | At&t - Local |
| 603-454 | Sunapee, NH | United States Cellular - Nh |
| 603-455 | Laconia, NH | United States Cellular - Nh |
| 603-456 | Warner, NH | Merrimack County Tel. Co. |
| 603-457 | Dover, NH | Idt America, Corp. - Nh |
| 603-458 | Salem, NH | Comcast Ip Phone, Llc |
| 603-459 | Nashua, NH | Lightship Telecom, Llc - Nh |
| 603-460 | Deerfield, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-461 | Merrimack, NH | United States Cellular - Nh |
| 603-462 | Deerfield, NH | Freedom Ring Communications, Llc |
| 603-463 | Deerfield, NH | Consolidated Comm Of No. New England-nh |
| 603-464 | Hillsboro, NH | Merrimack Co. Telephone Co., Dba Contoocook Valley |
| 603-465 | Hollis, NH | Hollis Telephone Company, Inc. |
| 603-466 | Gorham, NH | Consolidated Comm Of No. New England-nh |
| 603-467 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-468 | Seabrook, NH | Freedom Ring Communications, Llc |
| 603-469 | Meriden, NH | Kearsarge Tel. Co. |
| 603-470 | Concord, NH | United States Cellular - Nh |
| 603-471 | Bedford, NH | Consolidated Comm Of No. New England-nh |
| 603-472 | Bedford, NH | Consolidated Comm Of No. New England-nh |
| 603-473 | Milton Mills, NH | Consolidated Comm Of No. New England-nh |
| 603-474 | Seabrook, NH | Consolidated Comm Of No. New England-nh |
| 603-475 | Salem, NH | Bell Atlantic Mobile, Inc |
| 603-476 | Center Sandwich, NH | Consolidated Comm Of No. New England-nh |
| 603-477 | Claremont, NH | United States Cellular - Nh |
| 603-478 | Hillsboro Upper Village, NH | Granite State Tel., Inc. |
| 603-479 | Derry, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-480 | Manchester, NH | Dsci, Llc |
| 603-481 | Plymouth, NH | Bell Atlantic Mobile, Inc |
| 603-482 | Errol, NH | Consolidated Comm Of No. New England-nh |
| 603-483 | Candia, NH | Consolidated Comm Of No. New England-nh |
| 603-484 | Nashua, NH | Bell Atlantic Mobile, Inc |
| 603-485 | Suncook, NH | Consolidated Comm Of No. New England-nh |
| 603-486 | Manchester, NH | United States Cellular - Nh |
| 603-487 | New Boston, NH | Consolidated Comm Of No. New England-nh |
| 603-488 | Bedford, NH | Comcast Ip Phone, Llc |
| 603-489 | Hampstead, NH | Comcast Ip Phone, Llc |
| 603-490 | Derry, NH | Bell Atlantic Mobile, Inc |
| 603-491 | Concord, NH | Bell Atlantic Mobile, Inc |
| 603-492 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-493 | Merrimack, NH | Bell Atlantic Mobile, Inc |
| 603-494 | Merrimack, NH | Bell Atlantic Mobile, Inc |
| 603-495 | Washington, NH | Granite State Tel., Inc. |
| 603-496 | Concord, NH | Bell Atlantic Mobile, Inc |
| 603-497 | Goffstown, NH | Consolidated Comm Of No. New England-nh |
| 603-498 | Portsmouth, NH | Bell Atlantic Mobile, Inc |
| 603-499 | Keene, NH | Level 3 Communications, Llc - Nh |
| 603-500 | Tilton, NH | Fractel, Llc |
April 17, 2024