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 |
| 603-249
| 9 |
Milford |
NH |
MLFRNHSODS0 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-250
| A |
Center Harbor |
NH |
PTMONH073MD |
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-250
| 0 |
Center Harbor |
NH |
PTMONH073MD |
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-250
| 1 |
Center Harbor |
NH |
PTMONH073MD |
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-250
| 2 |
Center Harbor |
NH |
PTMONH073MD |
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-250
| 5 |
Center Harbor |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2005-04-14 |
|
| 603-250
| 6 |
Center Harbor |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2006-07-14 |
|
| 603-250
| 7 |
Center Harbor |
NH |
DOVRNHTHXEX |
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2020-03-08 |
|
| 603-250
| 8 |
Center Harbor |
NH |
ROCHNHWE4MD |
314C IDT AMERICA, CORP. - NH |
122 |
|
2008-04-18 |
|
| 603-250
| 9 |
Center Harbor |
NH |
PTMONH073MD |
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-251
| A |
Charlestown |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2025-04-30 |
|
| 603-251
| 0 |
Charlestown |
NH |
MNCHNHCO23Z |
073H TELNYX LLC |
122 |
|
2024-07-27 |
|
| 603-251
| 1 |
Charlestown |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2012-04-27 |
|
| 603-252
| A |
West Lebanon |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-252
| 0 |
West Lebanon |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-252
| 1 |
West Lebanon |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-252
| 2 |
West Lebanon |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-252
| 3 |
West Lebanon |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-252
| 4 |
West Lebanon |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-252
| 5 |
West Lebanon |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-252
| 6 |
West Lebanon |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-252
| 7 |
West Lebanon |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-252
| 8 |
West Lebanon |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-252
| 9 |
West Lebanon |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-253
| A |
Center Harbor |
NH |
CNHRNHPLRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-253
| 0 |
Center Harbor |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2026-03-24 |
|
| 603-253
| 1 |
Center Harbor |
NH |
MNCHNHCO42Z |
793K TWC IP ENABLED SERVICES, LLC |
122 |
|
2006-10-30 |
|
| 603-253
| 2 |
Center Harbor |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2004-09-04 |
|
| 603-253
| 3 |
Center Harbor |
NH |
CNHRNHPLRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-253
| 4 |
Center Harbor |
NH |
CNHRNHPLRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-253
| 5 |
Center Harbor |
NH |
MNCHNHCO42Z |
793K TWC IP ENABLED SERVICES, LLC |
122 |
|
2012-10-02 |
|
| 603-253
| 6 |
Center Harbor |
NH |
CNHRNHPLRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-253
| 7 |
Center Harbor |
NH |
CNHRNHPLRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-253
| 8 |
Center Harbor |
NH |
CNHRNHPLRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-253
| 9 |
Center Harbor |
NH |
CNHRNHPLRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-254
| A |
Plymouth |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-254
| 0 |
Plymouth |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2013-03-12 |
|
| 603-254
| 1 |
Plymouth |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2015-05-13 |
|
| 603-254
| 2 |
Plymouth |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-254
| 3 |
Plymouth |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-254
| 4 |
Plymouth |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-254
| 5 |
Plymouth |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-254
| 6 |
Plymouth |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-254
| 7 |
Plymouth |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-254
| 8 |
Plymouth |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-254
| 9 |
Plymouth |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-255
| A |
Manchester |
NH |
MNCHNHCOY0X |
425J CSC WIRELESS, LLC |
122 |
|
|
|
| 603-255
| 0 |
Manchester |
NH |
DOVRNHTHGMD |
624H ONVOY SPECTRUM, LLC |
122 |
|
2022-01-07 |
|
| 603-255
| 1 |
Manchester |
NH |
DOVRNHTHGMD |
624H ONVOY SPECTRUM, LLC |
122 |
|
2022-01-07 |
|
| 603-255
| 2 |
Manchester |
NH |
MNCHNHCOY0X |
425J CSC WIRELESS, LLC |
122 |
|
2020-04-17 |
|
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Last updated: Tue, 16 Jun 2026 00:09:45 UTC
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