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 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 603-262
| 8 |
Merrimack |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-262
| 9 |
Merrimack |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-263
| A |
Manchester |
NH |
MNCHNHBODS0 |
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
|
|
| 603-263
| 0 |
Manchester |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-263
| 1 |
Manchester |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-263
| 2 |
Manchester |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-263
| 3 |
Manchester |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
2011-10-09 |
|
| 603-263
| 4 |
Manchester |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-263
| 5 |
Manchester |
NH |
|
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
2020-01-10 |
|
| 603-263
| 6 |
Manchester |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-263
| 7 |
Manchester |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
2012-04-06 |
|
| 603-263
| 8 |
Manchester |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
2014-06-19 |
|
| 603-263
| 9 |
Manchester |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
2015-09-03 |
|
| 603-264
| A |
Manchester |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-264
| 0 |
Manchester |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-264
| 1 |
Manchester |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-264
| 2 |
Manchester |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-264
| 3 |
Manchester |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-264
| 4 |
Manchester |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-264
| 5 |
Manchester |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-264
| 6 |
Manchester |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-264
| 7 |
Manchester |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-264
| 8 |
Manchester |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2007-09-09 |
|
| 603-264
| 9 |
Manchester |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-265
| A |
New Boston |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-265
| 0 |
New Boston |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-265
| 1 |
New Boston |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2022-06-16 |
|
| 603-265
| 2 |
New Boston |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2021-11-26 |
|
| 603-265
| 3 |
New Boston |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2024-05-24 |
|
| 603-265
| 4 |
New Boston |
NH |
|
5562 METROPCS, INC. |
122 |
|
2024-08-09 |
|
| 603-265
| 5 |
New Boston |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2025-04-28 |
|
| 603-265
| 6 |
New Boston |
NH |
|
490J DISH WIRELESS, LLC |
122 |
|
2023-11-05 |
|
| 603-265
| 7 |
New Boston |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2013-12-27 |
|
| 603-265
| 8 |
New Boston |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2004-11-15 |
|
| 603-265
| 9 |
New Boston |
NH |
|
073H TELNYX LLC |
122 |
|
2024-07-07 |
|
| 603-266
| A |
Tilton |
NH |
TLTNNHPRRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-266
| 1 |
Tilton |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-266
| 2 |
Tilton |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-266
| 3 |
Tilton |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-266
| 5 |
Tilton |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
2013-12-09 |
|
| 603-266
| 7 |
Tilton |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2016-08-03 |
|
| 603-266
| 8 |
Tilton |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2015-09-28 |
|
| 603-266
| 9 |
Tilton |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2014-08-25 |
|
| 603-267
| A |
Belmont |
NH |
BLMTNHMARS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-267
| 0 |
Belmont |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2004-09-03 |
|
| 603-267
| 1 |
Belmont |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-267
| 2 |
Belmont |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2009-06-30 |
|
| 603-267
| 3 |
Belmont |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2003-03-11 |
|
| 603-267
| 4 |
Belmont |
NH |
|
996E BANDWIDTH.COM CLEC, LLC - NH |
122 |
|
2002-09-10 |
|
| 603-267
| 5 |
Belmont |
NH |
|
314C IDT AMERICA, CORP. - NH |
122 |
|
2008-04-18 |
|
<< 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 >>
Last updated: Thu, 29 Jan 2026 14:35:03 UTC
Sponsored by: VoIP.ms
Like this site? We accept donations via PayPal.