All assignees
768 prefixes in 603 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 603-702 | KINGSTON | 6386 | 2002-07-08 | Yes |
| 603-703 | MANCHESTER | 9827 | 2004-08-18 | Yes |
| 603-704 | DERRY | 8299 | — | Yes |
| 603-705 | SALISBURY | 318J | 2009-11-17 | Yes |
| 603-706 | RAYMOND | 829J | — | Yes |
| 603-707 | MEREDITH | 6386 | 2004-07-28 | Yes |
| 603-708 | CANTERBURY | 318J | 2005-02-18 | Yes |
| 603-709 | PLAINFIELD | 4017 | 2004-08-17 | Yes |
| 603-710 | WASHINGTON | 4036 | 2021-03-02 | Yes |
| 603-711 | XXXXXXXXXX | MULT | — | — |
| 603-712 | PIKE | 7778 | — | Yes |
| 603-713 | NASHUA | 637E | 2022-09-13 | Yes |
| 603-714 | BEDFORD | 6386 | 2001-11-19 | Yes |
| 603-715 | CONCORD | 318J | — | Yes |
| 603-716 | MANCHESTER | 6386 | — | Yes |
| 603-717 | CONCORD | 829J | — | Yes |
| 603-718 | NASHUA | 6386 | 2009-05-08 | Yes |
| 603-719 | KEENE | 8468 | — | Yes |
| 603-720 | TROY | 793K | 2023-02-27 | Yes |
| 603-721 | MILFORD | 5562 | 2002-07-08 | Yes |
| 603-722 | MANCHESTER | 996E | 2008-05-14 | Yes |
| 603-723 | BERLIN | 6290 | — | Yes |
| 603-724 | CONCORD | 829J | — | Yes |
| 603-725 | TAMWORTH | 4017 | — | Yes |
| 603-726 | CAMPTON | 5113 | — | Yes |
| 603-727 | LEBANON | 829J | — | Yes |
| 603-728 | NOWOODSTOK | 4017 | — | Yes |
| 603-729 | TILTON | 7778 | — | Yes |
| 603-730 | NO CONWAY | 7778 | — | Yes |
| 603-731 | CONCORD | 6386 | — | — |
| 603-732 | MILFORD | 7778 | — | Yes |
| 603-733 | NO CONWAY | 4017 | — | Yes |
| 603-734 | EPPING | 7778 | — | Yes |
| 603-735 | ANDOVER | 0045 | — | Yes |
| 603-736 | EPSOM | 5113 | — | Yes |
| 603-737 | LACONIA | 8468 | — | Yes |
| 603-738 | CONCORD | 4036 | — | — |
| 603-739 | NOWOODSTOK | 7778 | — | Yes |
| 603-740 | DOVER | 5113 | — | — |
| 603-741 | NEW BOSTON | 4017 | — | Yes |
| 603-742 | DOVER | 5113 | — | — |
| 603-743 | DOVER | 5113 | — | Yes |
| 603-744 | BRISTOL | 5113 | — | Yes |
| 603-745 | NOWOODSTOK | 5113 | — | Yes |
| 603-746 | CONTOOCOOK | 0047 | — | Yes |
| 603-747 | WOODSVILLE | 5113 | — | Yes |
| 603-748 | WARNER | 6386 | 2003-06-20 | Yes |
| 603-749 | DOVER | 5113 | — | — |
| 603-750 | DOVER | 383J | — | Yes |
| 603-751 | PELHAM | 7778 | — | Yes |
| 603-752 | BERLIN | 5113 | — | — |
| 603-753 | PENACOOK | 5113 | — | Yes |
| 603-754 | LANCASTER | 8468 | — | Yes |
| 603-755 | FARMINGTON | 5113 | — | Yes |
| 603-756 | WALPOLE | 5113 | — | Yes |
| 603-757 | KEENE | 829J | — | Yes |
| 603-758 | HAMPTON | 829J | — | Yes |
| 603-759 | NASHUA | 6386 | — | — |
| 603-760 | SEABROOK | 8299 | 2002-05-20 | Yes |
| 603-761 | LITTLETON | 8468 | — | Yes |
| 603-762 | KEENE | 6386 | — | Yes |
| 603-763 | SUNAPEE | 5113 | — | Yes |
| 603-764 | WARREN | 5113 | — | Yes |
| 603-765 | NASHUA | 6889 | — | Yes |
| 603-766 | PORTSMOUTH | 8468 | — | — |
| 603-767 | DOVER | 4036 | — | — |
| 603-768 | DANBURY | 5113 | — | Yes |
| 603-769 | MILFORD | 4017 | — | Yes |
| 603-770 | EXETER | 6386 | — | — |
| 603-771 | MANCHESTER | 5113 | — | — |
| 603-772 | EXETER | 5113 | — | — |
| 603-773 | EXETER | 5113 | — | Yes |
| 603-774 | DUNBARTON | 0043 | — | — |
| 603-775 | EXETER | 5113 | — | Yes |
| 603-776 | BARNSTEAD | 0049 | — | Yes |
| 603-777 | EXETER | 5113 | — | Yes |
| 603-778 | EXETER | 5113 | — | — |
| 603-779 | PLYMOUTH | 7778 | — | Yes |
| 603-780 | CANAAN | 4017 | — | Yes |
| 603-781 | DOVER | 4036 | — | — |
| 603-782 | MANCHESTER | 4017 | — | Yes |
| 603-783 | CANTERBURY | 5113 | — | Yes |
| 603-784 | PETERBROGH | 7778 | — | Yes |
| 603-785 | MANCHESTER | 4036 | — | — |
| 603-786 | RUMNEY | 5113 | — | Yes |
| 603-787 | WOODSVILLE | 5113 | — | Yes |
| 603-788 | LANCASTER | 5113 | — | Yes |
| 603-789 | DANBURY | 8468 | — | Yes |
| 603-790 | W LEBANON | 6386 | 2002-05-20 | Yes |
| 603-791 | NASHUA | 5113 | — | Yes |
| 603-792 | MANCHESTER | 8468 | — | — |
| 603-793 | EXETER | 5562 | 2002-05-20 | Yes |
| 603-794 | LACONIA | 4036 | 2023-08-11 | Yes |
| 603-795 | LYME | 5113 | — | Yes |
| 603-796 | BOSCAWEN | 0045 | — | Yes |
| 603-797 | PLAISTOW | 7778 | — | Yes |
| 603-798 | CHICHESTER | 0045 | — | Yes |
| 603-799 | MANCHESTER | 5562 | — | Yes |
| 603-800 | MEREDITH | 965H | 2019-12-09 | Yes |
| 603-801 | MILFORD | 6386 | 2001-03-16 | Yes |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.