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 6:18:55 AM on January 3, 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 |
|---|---|---|
| 603-707 | Meredith, NH | Bell Atlantic Mobile, Inc |
| 603-708 | Canterbury, NH | Comcast Ip Phone, Llc |
| 603-709 | Plainfield, NH | Level 3 Communications, Llc - Nh |
| 603-710 | Washington, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-711 | New Hampshire | |
| 603-712 | Pike, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-714 | Bedford, NH | Bell Atlantic Mobile, Inc |
| 603-715 | Concord, NH | Comcast Ip Phone, Llc |
| 603-716 | Manchester, NH | Crc Communications Of Maine, Inc. - Nh |
| 603-717 | Concord, NH | Choice One Of New Hampshire, Inc. |
| 603-718 | Nashua, NH | Bell Atlantic Mobile, Inc |
| 603-719 | Keene, NH | Freedom Ring Communications, Llc |
| 603-721 | Milford, NH | Sprint Spectrum, L.p. |
| 603-722 | Manchester, NH | Bandwidth.com Clec, Llc - Nh |
| 603-723 | Berlin, NH | United States Cellular - Nh |
| 603-724 | Concord, NH | Paetec Communications, Inc. - Nh |
| 603-725 | Tamworth, NH | Level 3 Communications, Llc - Nh |
| 603-726 | Campton, NH | Consolidated Comm Of No. New England-nh |
| 603-727 | Lebanon, NH | Lightship Telecom, Llc - Nh |
| 603-728 | North Woodstock, NH | Level 3 Communications, Llc - Nh |
| 603-729 | Tilton, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-730 | North Conway, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-731 | Concord, NH | Bell Atlantic Mobile, Inc |
| 603-732 | Milford, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-733 | North Conway, NH | Level 3 Communications, Llc - Nh |
| 603-734 | Epping, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-735 | Andover, NH | Kearsarge Tel. Co. |
| 603-736 | Epsom, NH | Consolidated Comm Of No. New England-nh |
| 603-737 | Laconia, NH | Freedom Ring Communications, Llc |
| 603-738 | Concord, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-739 | North Woodstock, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-740 | Dover, NH | Consolidated Comm Of No. New England-nh |
| 603-741 | New Boston, NH | Level 3 Communications, Llc - Nh |
| 603-742 | Dover, NH | Consolidated Comm Of No. New England-nh |
| 603-743 | Dover, NH | Consolidated Comm Of No. New England-nh |
| 603-744 | Bristol, NH | Consolidated Comm Of No. New England-nh |
| 603-745 | North Woodstock, NH | Consolidated Comm Of No. New England-nh |
| 603-746 | Contoocook, NH | Merrimack County Tel. Co. |
| 603-747 | Woodsville, NH | Consolidated Comm Of No. New England-nh |
| 603-748 | Warner, NH | Bell Atlantic Mobile, Inc |
| 603-749 | Dover, NH | Consolidated Comm Of No. New England-nh |
| 603-750 | Dover, NH | Consolidated Comm Enterprise Services Inc |
| 603-751 | Pelham, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-752 | Berlin, NH | Consolidated Comm Of No. New England-nh |
| 603-753 | Penacook, NH | Consolidated Comm Of No. New England-nh |
| 603-754 | Lancaster, NH | Freedom Ring Communications, Llc |
| 603-755 | Farmington, NH | Consolidated Comm Of No. New England-nh |
| 603-756 | Walpole, NH | Consolidated Comm Of No. New England-nh |
| 603-757 | Keene, NH | Lightship Telecom, Llc - Nh |
| 603-758 | Hampton, NH | Choice One Of New Hampshire, Inc. |
| 603-759 | Nashua, NH | Bell Atlantic Mobile, Inc |
| 603-760 | Seabrook, NH | Teleport Communications America, Llc - Nh |
| 603-761 | Littleton, NH | Freedom Ring Communications, Llc |
| 603-762 | Keene, NH | Bell Atlantic Mobile, Inc |
| 603-763 | Sunapee, NH | Consolidated Comm Of No. New England-nh |
| 603-764 | Warren, NH | Consolidated Comm Of No. New England-nh |
| 603-765 | Nashua, NH | Sprint Spectrum, L.p. |
| 603-766 | Portsmouth, NH | Freedom Ring Communications, Llc |
| 603-767 | Dover, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-768 | Danbury, NH | Consolidated Comm Of No. New England-nh |
| 603-769 | Milford, NH | Level 3 Communications, Llc - Nh |
| 603-770 | Exeter, NH | Bell Atlantic Mobile, Inc |
| 603-771 | Manchester, NH | Consolidated Comm Of No. New England-nh |
| 603-772 | Exeter, NH | Consolidated Comm Of No. New England-nh |
| 603-773 | Exeter, NH | Consolidated Comm Of No. New England-nh |
| 603-774 | Dunbarton, NH | Dunbarton Tel. Co. |
| 603-775 | Exeter, NH | Consolidated Comm Of No. New England-nh |
| 603-776 | Barnstead, NH | Union Tel. Co. |
| 603-777 | Exeter, NH | Consolidated Comm Of No. New England-nh |
| 603-778 | Exeter, NH | Consolidated Comm Of No. New England-nh |
| 603-779 | Plymouth, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-780 | Canaan, NH | Level 3 Communications, Llc - Nh |
| 603-781 | Dover, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-782 | Manchester, NH | Level 3 Communications, Llc - Nh |
| 603-783 | Canterbury, NH | Consolidated Comm Of No. New England-nh |
| 603-784 | Peterborough, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-785 | Manchester, NH | New Cingular Wireless Pcs, Llc - Dc |
| 603-786 | Rumney, NH | Consolidated Comm Of No. New England-nh |
| 603-787 | Woodsville, NH | Consolidated Comm Of No. New England-nh |
| 603-788 | Lancaster, NH | Consolidated Comm Of No. New England-nh |
| 603-789 | Danbury, NH | Freedom Ring Communications, Llc |
| 603-790 | West Lebanon, NH | Bell Atlantic Mobile, Inc |
| 603-791 | Nashua, NH | Consolidated Comm Of No. New England-nh |
| 603-792 | Manchester, NH | Freedom Ring Communications, Llc |
| 603-793 | Exeter, NH | Sprint Spectrum, L.p. |
| 603-795 | Lyme, NH | Consolidated Comm Of No. New England-nh |
| 603-796 | Boscawen, NH | Kearsarge Tel. Co. |
| 603-797 | Plaistow, NH | Mcimetro Access Transmission Services Llc - Nh |
| 603-798 | Chichester, NH | Kearsarge Tel. Co. |
| 603-799 | Manchester, NH | Sprint Spectrum, L.p. |
| 603-800 | Meredith, NH | Fractel, Llc |
| 603-801 | Milford, NH | Bell Atlantic Mobile, Inc |
| 603-802 | New Hampshire | |
| 603-803 | Keene, NH | Centurylink Communications, Llc |
| 603-808 | Antrim, NH | Comcast Ip Phone, Llc |
| 603-809 | Nashua, NH | Bell Atlantic Mobile, Inc |
| 603-810 | Nashua, NH | Telnyx Llc |
| 603-811 | New Hampshire | |
| 603-812 | Portsmouth, NH | Bell Atlantic Mobile, Inc |
| 603-813 | Center Barnstead, NH | Idt America, Corp. - Nh |
December 30, 2024