Local Calling Guide
Area code/prefix search
NPA: 603
[Rate centres in NPA 603]
[Dial plan for NPA 603]
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 603-447
| 8 |
Conway |
NH |
CNWYNHYARS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-447
| 9 |
Conway |
NH |
MNCHNHCOCM1 |
5562 METROPCS, INC. |
122 |
|
2005-07-04 |
|
| 603-448
| A |
Lebanon |
NH |
LBNNNHBARS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-449
| A |
Milan |
NH |
MILNNHPLRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-449
| 2 |
Milan |
NH |
MILNNHPLRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-449
| 3 |
Milan |
NH |
MILNNHPLRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-449
| 4 |
Milan |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2019-10-25 |
|
| 603-449
| 6 |
Milan |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2025-08-30 |
|
| 603-449
| 9 |
Milan |
NH |
MILNNHPLRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
2014-06-20 |
|
| 603-450
| A |
Concord |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-450
| 0 |
Concord |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2021-06-05 |
|
| 603-450
| 1 |
Concord |
NH |
MNCHNHCO18Z |
197D VONAGE AMERICA LLC |
122 |
|
2018-12-06 |
|
| 603-450
| 2 |
Concord |
NH |
MNCHNHCO18Z |
197D VONAGE AMERICA LLC |
122 |
|
2018-12-06 |
|
| 603-450
| 3 |
Concord |
NH |
MNCHNHCO18Z |
197D VONAGE AMERICA LLC |
122 |
|
2018-12-06 |
|
| 603-450
| 4 |
Concord |
NH |
MNCHNHCO18Z |
197D VONAGE AMERICA LLC |
122 |
|
2018-12-06 |
|
| 603-450
| 5 |
Concord |
NH |
MNCHNHCO18Z |
197D VONAGE AMERICA LLC |
122 |
|
2018-12-06 |
|
| 603-450
| 6 |
Concord |
NH |
MNCHNHCO18Z |
197D VONAGE AMERICA LLC |
122 |
|
2018-12-06 |
|
| 603-450
| 7 |
Concord |
NH |
MNCHNHCO18Z |
197D VONAGE AMERICA LLC |
122 |
|
2018-12-06 |
|
| 603-450
| 8 |
Concord |
NH |
MNCHNHCO18Z |
197D VONAGE AMERICA LLC |
122 |
|
2018-12-06 |
|
| 603-450
| 9 |
Concord |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2018-11-11 |
|
| 603-451
| A |
Concord |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
|
|
| 603-451
| 0 |
Concord |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2021-04-13 |
|
| 603-451
| 1 |
Concord |
NH |
MNCHNHCOX9Z |
637E ONVOY, LLC - NH |
122 |
|
2021-04-23 |
|
| 603-451
| 2 |
Concord |
NH |
MNCHNHCOX9Z |
637E ONVOY, LLC - NH |
122 |
|
2021-08-02 |
|
| 603-451
| 3 |
Concord |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2020-09-04 |
|
| 603-451
| 4 |
Concord |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2020-11-06 |
|
| 603-451
| 5 |
Concord |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2020-12-21 |
|
| 603-451
| 6 |
Concord |
NH |
MNCHNHBODS0 |
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
2020-12-18 |
|
| 603-451
| 7 |
Concord |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2020-05-23 |
|
| 603-451
| 8 |
Concord |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2020-05-23 |
|
| 603-451
| 9 |
Concord |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2020-05-23 |
|
| 603-452
| A |
Conway |
NH |
PTMONH073MD |
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-452
| 0 |
Conway |
NH |
PTMONH073MD |
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-452
| 1 |
Conway |
NH |
PTMONH073MD |
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-452
| 2 |
Conway |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2025-10-11 |
|
| 603-452
| 4 |
Conway |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2012-04-17 |
|
| 603-452
| 5 |
Conway |
NH |
MNCHNHCO42Z |
793K TWC IP ENABLED SERVICES, LLC |
122 |
|
2006-10-30 |
|
| 603-452
| 7 |
Conway |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2004-09-04 |
|
| 603-452
| 8 |
Conway |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2005-10-22 |
|
| 603-453
| A |
Hampstead |
NH |
MNCHNHCO37Z |
7421 AT&T - LOCAL |
122 |
|
|
|
| 603-453
| 0 |
Hampstead |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2020-11-26 |
|
| 603-453
| 1 |
Hampstead |
NH |
MNCHNHCO23Z |
073H TELNYX LLC |
122 |
|
2022-12-02 |
|
| 603-453
| 2 |
Hampstead |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2023-05-28 |
|
| 603-453
| 3 |
Hampstead |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2024-03-08 |
|
| 603-453
| 4 |
Hampstead |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2024-10-08 |
|
| 603-453
| 5 |
Hampstead |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2025-02-20 |
|
| 603-453
| 6 |
Hampstead |
NH |
DOVRNHTHXEX |
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2021-07-07 |
|
| 603-453
| 8 |
Hampstead |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2023-12-04 |
|
| 603-453
| 9 |
Hampstead |
NH |
MNCHNHCO37Z |
7421 AT&T - LOCAL |
122 |
|
2021-07-07 |
|
| 603-454
| A |
Sunapee |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
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Last updated: Tue, 16 Jun 2026 00:09:45 UTC
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