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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 603-796
| 3 |
Boscawen |
NH |
BSCWNHXARP0 |
0045 KEARSARGE TEL. CO. |
122 |
|
|
|
| 603-796
| 6 |
Boscawen |
NH |
BSCWNHXARP0 |
0045 KEARSARGE TEL. CO. |
122 |
|
|
|
| 603-796
| 7 |
Boscawen |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2025-07-11 |
|
| 603-797
| A |
Plaistow |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-797
| 0 |
Plaistow |
NH |
MNCHNHCO47Z |
829J PAETEC ITEL, LLC |
122 |
|
2001-03-26 |
|
| 603-797
| 1 |
Plaistow |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2024-09-09 |
|
| 603-797
| 2 |
Plaistow |
NH |
MNCHNHAC7MD |
145J TERRA NOVA TELECOM INC. |
122 |
|
2026-01-12 |
|
| 603-797
| 3 |
Plaistow |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2026-09-11 |
|
| 603-797
| 8 |
Plaistow |
NH |
MNCHNHCO23Z |
073H TELNYX LLC |
122 |
|
2024-03-31 |
|
| 603-797
| 9 |
Plaistow |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-798
| A |
Chichester |
NH |
CHCHNHXARP0 |
0045 KEARSARGE TEL. CO. |
122 |
|
|
|
| 603-798
| 0 |
Chichester |
NH |
CHCHNHXARP0 |
0045 KEARSARGE TEL. CO. |
122 |
|
|
|
| 603-798
| 3 |
Chichester |
NH |
CHCHNHXARP0 |
0045 KEARSARGE TEL. CO. |
122 |
|
|
|
| 603-798
| 4 |
Chichester |
NH |
CHCHNHXARP0 |
0045 KEARSARGE TEL. CO. |
122 |
|
|
|
| 603-798
| 5 |
Chichester |
NH |
CHCHNHXARP0 |
0045 KEARSARGE TEL. CO. |
122 |
|
|
|
| 603-798
| 9 |
Chichester |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2025-07-11 |
|
| 603-799
| A |
Manchester |
NH |
MNCHNHCOCM1 |
5562 METROPCS, INC. |
122 |
|
|
|
| 603-799
| 0 |
Manchester |
NH |
DOVRNHTHGMD |
624H ONVOY SPECTRUM, LLC |
122 |
|
2023-09-16 |
|
| 603-799
| 1 |
Manchester |
NH |
DOVRNHTHGMD |
624H ONVOY SPECTRUM, LLC |
122 |
|
2023-09-16 |
|
| 603-799
| 2 |
Manchester |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2023-10-30 |
|
| 603-799
| 3 |
Manchester |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2024-08-07 |
|
| 603-799
| 4 |
Manchester |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2023-11-11 |
|
| 603-799
| 5 |
Manchester |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2024-11-10 |
|
| 603-799
| 6 |
Manchester |
NH |
MNCHNHCOCM1 |
5562 METROPCS, INC. |
122 |
|
|
|
| 603-799
| 7 |
Manchester |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2024-06-10 |
|
| 603-799
| 8 |
Manchester |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2024-06-10 |
|
| 603-799
| 9 |
Manchester |
NH |
MNCHNHCO23Z |
073H TELNYX LLC |
122 |
|
2024-08-08 |
|
| 603-800
| A |
Meredith |
NH |
MNCHNHCO26Z |
965H FRACTEL, LLC |
122 |
|
|
|
| 603-800
| 0 |
Meredith |
NH |
MNCHNHCO26Z |
965H FRACTEL, LLC |
122 |
|
2020-01-30 |
|
| 603-800
| 1 |
Meredith |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2020-01-31 |
|
| 603-800
| 2 |
Meredith |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2021-06-06 |
|
| 603-800
| 3 |
Meredith |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2021-11-04 |
|
| 603-800
| 4 |
Meredith |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2022-02-21 |
|
| 603-800
| 5 |
Meredith |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
2020-09-16 |
|
| 603-800
| 6 |
Meredith |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2022-05-06 |
|
| 603-800
| 7 |
Meredith |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2022-06-16 |
|
| 603-800
| 8 |
Meredith |
NH |
MNCHNHCO26Z |
965H FRACTEL, LLC |
122 |
|
2020-01-30 |
|
| 603-800
| 9 |
Meredith |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2022-01-07 |
|
| 603-801
| A |
Milford |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-801
| 0 |
Milford |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-801
| 1 |
Milford |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-801
| 2 |
Milford |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-801
| 3 |
Milford |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-801
| 4 |
Milford |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-801
| 5 |
Milford |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2003-08-03 |
|
| 603-801
| 6 |
Milford |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2003-11-03 |
|
| 603-801
| 7 |
Milford |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-801
| 8 |
Milford |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-801
| 9 |
Milford |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-802
| A |
Concord |
NH |
MNCHNHCOX9Z |
637E ONVOY, LLC - NH |
122 |
|
|
|
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Last updated: Tue, 01 Sep 2026 00:40:05 UTC
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