Local Calling Guide
Area code/prefix search
NPA: 603
[Rate centres in NPA 603]
[Dial plan for NPA 603]
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| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 603-913
| 1 |
Merrimack |
NH |
|
5562 METROPCS, INC. |
122 |
|
2004-10-18 |
|
| 603-913
| 2 |
Merrimack |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-913
| 3 |
Merrimack |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2004-09-02 |
|
| 603-913
| 4 |
Merrimack |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2006-03-04 |
|
| 603-913
| 5 |
Merrimack |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2006-09-01 |
|
| 603-913
| 6 |
Merrimack |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-913
| 7 |
Merrimack |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2007-05-03 |
|
| 603-913
| 8 |
Merrimack |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2007-05-05 |
|
| 603-913
| 9 |
Merrimack |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-03-03 |
|
| 603-915
| A |
Gorham |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-915
| 0 |
Gorham |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-915
| 1 |
Gorham |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-915
| 2 |
Gorham |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2017-05-04 |
|
| 603-915
| 3 |
Gorham |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-915
| 4 |
Gorham |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2024-10-26 |
|
| 603-915
| 5 |
Gorham |
NH |
|
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2021-04-05 |
|
| 603-915
| 6 |
Gorham |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-12-12 |
|
| 603-915
| 7 |
Gorham |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2009-01-05 |
|
| 603-915
| 8 |
Gorham |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2017-09-19 |
|
| 603-915
| 9 |
Gorham |
NH |
|
793K TWC IP ENABLED SERVICES, LLC |
122 |
|
2012-10-02 |
|
| 603-916
| A |
Meredith |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2024-03-17 |
|
| 603-916
| 0 |
Meredith |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2024-06-07 |
|
| 603-916
| 1 |
Meredith |
NH |
|
073H TELNYX LLC |
122 |
|
2024-06-30 |
|
| 603-916
| 2 |
Meredith |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2025-02-09 |
|
| 603-916
| 8 |
Meredith |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2026-01-07 |
|
| 603-916
| 9 |
Meredith |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2024-03-17 |
|
| 603-918
| A |
Hampton |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-918
| 0 |
Hampton |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-918
| 1 |
Hampton |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-11-03 |
|
| 603-918
| 2 |
Hampton |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2014-09-01 |
|
| 603-918
| 3 |
Hampton |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2011-02-11 |
|
| 603-918
| 4 |
Hampton |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2012-11-11 |
|
| 603-918
| 5 |
Hampton |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2025-09-18 |
|
| 603-918
| 6 |
Hampton |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-918
| 7 |
Hampton |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-918
| 8 |
Hampton |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-918
| 9 |
Hampton |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-919
| A |
Rochester |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-919
| 0 |
Rochester |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2023-08-19 |
|
| 603-919
| 1 |
Rochester |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2023-08-20 |
|
| 603-919
| 2 |
Rochester |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2024-05-15 |
|
| 603-919
| 3 |
Rochester |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2026-01-07 |
|
| 603-919
| 4 |
Rochester |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2025-12-01 |
|
| 603-919
| 7 |
Rochester |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2023-11-25 |
|
| 603-919
| 8 |
Rochester |
NH |
|
073H TELNYX LLC |
122 |
|
2023-10-16 |
|
| 603-919
| 9 |
Rochester |
NH |
|
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
2023-08-21 |
|
| 603-921
| A |
Nashua |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-921
| 0 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2009-09-05 |
|
| 603-921
| 1 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2009-11-28 |
|
| 603-921
| 2 |
Nashua |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2010-10-26 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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