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 |
| 603-904
| 4 |
Walpole |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
2006-10-31 |
|
| 603-905
| A |
Barrington |
NH |
PTMONH07DS1 |
9827 OTEL TELEKOM, INC. - NH |
122 |
|
|
|
| 603-905
| 0 |
Barrington |
NH |
PTMONH07DS1 |
9827 OTEL TELEKOM, INC. - NH |
122 |
|
2006-11-11 |
|
| 603-905
| 9 |
Barrington |
NH |
ROCHNHWE4MD |
314C IDT AMERICA, CORP. - NH |
122 |
|
2008-04-18 |
|
| 603-906
| A |
Barnstead |
NH |
ROCHNHWE4MD |
314C IDT AMERICA, CORP. - NH |
122 |
|
|
|
| 603-906
| 2 |
Barnstead |
NH |
ROCHNHWE4MD |
314C IDT AMERICA, CORP. - NH |
122 |
|
2009-12-18 |
|
| 603-910
| A |
Hampton |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2025-04-30 |
|
| 603-910
| 0 |
Hampton |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2025-05-01 |
|
| 603-910
| 2 |
Hampton |
NH |
MNCHNHBO2MD |
490J BOOST SUBSCRIBERCO L.L.C. |
122 |
|
2023-10-27 |
|
| 603-910
| 5 |
Hampton |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
2015-11-17 |
|
| 603-910
| 6 |
Hampton |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-912
| A |
Salem |
NH |
MNCHNHAC7MD |
145J TERRA NOVA TELECOM INC. |
122 |
|
|
|
| 603-912
| 0 |
Salem |
NH |
MNCHNHCOXCZ |
996E BANDWIDTH.COM CLEC, LLC - NH |
122 |
|
|
|
| 603-912
| 1 |
Salem |
NH |
MNCHNHCOX9Z |
637E ONVOY, LLC - NH |
122 |
|
2023-09-09 |
|
| 603-912
| 2 |
Salem |
NH |
MNCHNHCOX9Z |
637E ONVOY, LLC - NH |
122 |
|
2022-09-29 |
|
| 603-912
| 3 |
Salem |
NH |
MNCHNHBO2MD |
490J BOOST SUBSCRIBERCO L.L.C. |
122 |
|
2023-10-27 |
|
| 603-912
| 4 |
Salem |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
2014-02-10 |
|
| 603-912
| 5 |
Salem |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
2006-12-18 |
|
| 603-912
| 6 |
Salem |
NH |
PTMONH073MD |
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
2015-03-26 |
|
| 603-912
| 7 |
Salem |
NH |
MNCHNHCOX9Z |
637E ONVOY, LLC - NH |
122 |
|
2022-01-15 |
|
| 603-912
| 8 |
Salem |
NH |
MNCHNHCOX9Z |
637E ONVOY, LLC - NH |
122 |
|
2022-05-20 |
|
| 603-912
| 9 |
Salem |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2021-05-11 |
|
| 603-913
| A |
Merrimack |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2025-04-30 |
|
| 603-913
| 0 |
Merrimack |
NH |
PTMONH073MD |
9827 OTEL TELEKOM, INC. - NH |
122 |
|
2004-10-09 |
|
| 603-913
| 1 |
Merrimack |
NH |
MNCHNHCOCM1 |
5562 METROPCS, INC. |
122 |
|
2004-10-18 |
|
| 603-913
| 2 |
Merrimack |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-913
| 3 |
Merrimack |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2004-09-02 |
|
| 603-913
| 4 |
Merrimack |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2006-03-04 |
|
| 603-913
| 5 |
Merrimack |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2006-09-01 |
|
| 603-913
| 6 |
Merrimack |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-913
| 7 |
Merrimack |
NH |
MNCHNHACAMD |
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 |
MNCHNHACAMD |
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 |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-915
| 1 |
Gorham |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-915
| 2 |
Gorham |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2017-05-04 |
|
| 603-915
| 3 |
Gorham |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-915
| 4 |
Gorham |
NH |
MNCHNHCOX9Z |
637E ONVOY, LLC - NH |
122 |
|
2024-10-26 |
|
| 603-915
| 5 |
Gorham |
NH |
DOVRNHTHXEX |
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2021-04-05 |
|
| 603-915
| 6 |
Gorham |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-12-12 |
|
| 603-915
| 7 |
Gorham |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2009-01-05 |
|
| 603-915
| 8 |
Gorham |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2017-09-19 |
|
| 603-915
| 9 |
Gorham |
NH |
MNCHNHCO42Z |
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 |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2024-06-07 |
|
| 603-916
| 1 |
Meredith |
NH |
MNCHNHCO23Z |
073H TELNYX LLC |
122 |
|
2024-06-30 |
|
| 603-916
| 2 |
Meredith |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2025-02-09 |
|
| 603-916
| 3 |
Meredith |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2026-03-09 |
|
| 603-916
| 8 |
Meredith |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2026-01-07 |
|
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Last updated: Tue, 31 Mar 2026 13:56:49 UTC
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