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 2:44:40 AM on February 5, 2025.
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 |
|---|---|---|
| 603-601 | Hampton, NH | Paetec Communications, Inc. - Nh |
| 603-602 | Rochester, NH | Teleport Communications America, Llc - Nh |
| 603-603 | New Hampshire | |
| 603-604 | Rye Beach, NH | Consolidated Comm Of No. New England-nh |
| 603-605 | Dover, NH | Peerless Network Of New Hampshire, Llc - Nh |
| 603-606 | Manchester, NH | Onvoy Spectrum, Llc |
| 603-607 | West Chesterfield, NH | Nuso, Llc |
| 603-608 | Northwood, NH | Sprint Spectrum, L.p. |
| 603-609 | Dover, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-610 | Portsmouth, NH | Choice One Of New Hampshire, Inc. |
| 603-611 | New Hampshire | |
| 603-612 | Plaistow, NH | Conversent Communications Of New Hampshire, Llc |
| 603-613 | Colebrook, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-614 | West Chesterfield, NH | Level 3 Communications, Llc - Nh |
| 603-615 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-616 | Littleton, NH | United States Cellular - Nh |
| 603-617 | Dover, NH | Choice One Of New Hampshire, Inc. |
| 603-618 | Pike, NH | Level 3 Communications, Llc - Nh |
| 603-620 | Merrimack, NH | United States Cellular - Nh |
| 603-621 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-622 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-623 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-624 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-625 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-626 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-627 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-628 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-629 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-630 | Laconia, NH | Bell Atlantic Mobile, Inc |
| 603-631 | Lancaster, NH | United States Cellular - Nh |
| 603-632 | Enfield, NH | Consolidated Comm Of No. New England-nh |
| 603-633 | Milford, NH | Bell Atlantic Mobile, Inc |
| 603-634 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-635 | Pelham, NH | Consolidated Comm Of No. New England-nh |
| 603-636 | Groveton, NH | Consolidated Comm Of No. New England-nh |
| 603-637 | Bedford, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-638 | Monroe, NH | Consolidated Comm Of No. New England-nh |
| 603-639 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-640 | Hanover, NH | Consolidated Comm Of No. New England-nh |
| 603-641 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-642 | Kingston, NH | Consolidated Comm Of No. New England-nh |
| 603-643 | Hanover, NH | Consolidated Comm Of No. New England-nh |
| 603-644 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-645 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-646 | Hanover, NH | Consolidated Comm Of No. New England-nh |
| 603-647 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-648 | Salisbury, NH | Kearsarge Tel. Co. |
| 603-650 | Hanover, NH | Consolidated Comm Of No. New England-nh |
| 603-651 | Center Ossipee, NH | United States Cellular - Nh |
| 603-652 | Milton, NH | Consolidated Comm Of No. New England-nh |
| 603-653 | Hanover, NH | Consolidated Comm Of No. New England-nh |
| 603-654 | Wilton, NH | Wilton Tel. Co. |
| 603-655 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-656 | Manchester, NH | Consolidated Comm Enterprise Services Inc |
| 603-657 | Manchester, NH | Choice One Of New Hampshire, Inc. |
| 603-658 | Exeter, NH | Freedom Ring Communications, Llc |
| 603-659 | Newmarket, NH | Consolidated Comm Of No. New England-nh |
| 603-660 | Goffstown, NH | Bell Atlantic Mobile, Inc |
| 603-661 | Manchester, NH | Sprint Spectrum, L.p. |
| 603-662 | Conway, NH | United States Cellular - Nh |
| 603-663 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-664 | Barrington, NH | Consolidated Comm Of No. New England-nh |
| 603-665 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-666 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-667 | Lebanon, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-668 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-669 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-670 | Merrimack, NH | Choice One Of New Hampshire, Inc. |
| 603-671 | Franklin, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-672 | Milford, NH | Consolidated Comm Of No. New England-nh |
| 603-673 | Milford, NH | Consolidated Comm Of No. New England-nh |
| 603-674 | Manchester, NH | Sprint Spectrum, L.p. |
| 603-675 | Plainfield, NH | Consolidated Comm Of No. New England-nh |
| 603-676 | Hanover, NH | Freedom Ring Communications, Llc |
| 603-677 | Meredith, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-678 | Lebanon, NH | Level 3 Communications, Llc - Nh |
| 603-679 | Epping, NH | Consolidated Comm Of No. New England-nh |
| 603-680 | Hillsboro, NH | Enhanced Communications Of Northern New England-nh |
| 603-681 | Salem, NH | Choice One Of New Hampshire, Inc. |
| 603-682 | Manchester, NH | Sprint Spectrum, L.p. |
| 603-683 | Merrimack, NH | Consolidated Comm Of No. New England-nh |
| 603-684 | Lancaster, NH | Level 3 Communications, Llc - Nh |
| 603-685 | Salem, NH | Conversent Communications Of New Hampshire, Llc |
| 603-686 | Exeter, NH | Bell Atlantic Mobile, Inc |
| 603-687 | Jackson, NH | Freedom Ring Communications, Llc |
| 603-688 | Concord, NH | Peerless Network Of New Hampshire, Llc - Nh |
| 603-689 | Nashua, NH | Choice One Of New Hampshire, Inc. |
| 603-690 | Claremont, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-692 | Somersworth, NH | Consolidated Comm Of No. New England-nh |
| 603-693 | Epping, NH | Conversent Communications Of New Hampshire, Llc |
| 603-694 | Chatham, NH | Consolidated Communications Of Maine Company |
| 603-695 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-696 | Manchester, NH | Onvoy, Llc - Nh |
| 603-700 | New Hampshire | |
| 603-701 | New Durham, NH | Idt America, Corp. - Nh |
| 603-702 | Kingston, NH | Bell Atlantic Mobile, Inc |
| 603-703 | Manchester, NH | Otel Telekom, Inc. - Nh |
| 603-704 | Derry, NH | Teleport Communications America, Llc - Nh |
| 603-705 | Salisbury, NH | Comcast Ip Phone, Llc |
| 603-706 | Raymond, NH | Conversent Communications Of New Hampshire, Llc |
February 4, 2025