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 |
| 603-300
| 3 |
Chester |
NH |
|
5562 METROPCS, INC. |
122 |
|
2005-10-23 |
|
| 603-300
| 6 |
Chester |
NH |
|
5562 METROPCS, INC. |
122 |
|
2003-08-15 |
|
| 603-300
| 7 |
Chester |
NH |
|
5562 METROPCS, INC. |
122 |
|
2003-08-15 |
|
| 603-300
| 8 |
Chester |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2003-08-15 |
|
| 603-300
| 9 |
Chester |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2025-08-31 |
|
| 603-301
| A |
Center Ossipee |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
| 603-301
| 0 |
Center Ossipee |
NH |
|
793K TWC IP ENABLED SERVICES, LLC |
122 |
|
2016-06-24 |
|
| 603-301
| 1 |
Center Ossipee |
NH |
|
793K TWC IP ENABLED SERVICES, LLC |
122 |
|
2006-10-30 |
|
| 603-301
| 4 |
Center Ossipee |
NH |
|
996E BANDWIDTH.COM CLEC, LLC - NH |
122 |
|
2002-09-10 |
|
| 603-301
| 5 |
Center Ossipee |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
2015-06-17 |
|
| 603-301
| 6 |
Center Ossipee |
NH |
|
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2020-11-09 |
|
| 603-301
| 8 |
Center Ossipee |
NH |
|
073H TELNYX LLC |
122 |
|
2024-07-01 |
|
| 603-302
| A |
Manchester |
NH |
MNCHNHCODS2 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-303
| A |
Raymond |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-304
| A |
Enfield |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-304
| 0 |
Enfield |
NH |
|
073H TELNYX LLC |
122 |
|
2024-07-07 |
|
| 603-304
| 2 |
Enfield |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2015-08-20 |
|
| 603-304
| 3 |
Enfield |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2025-05-03 |
|
| 603-304
| 4 |
Enfield |
NH |
|
5562 METROPCS, INC. |
122 |
|
2025-05-31 |
|
| 603-304
| 5 |
Enfield |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-304
| 6 |
Enfield |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-304
| 7 |
Enfield |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-304
| 8 |
Enfield |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-304
| 9 |
Enfield |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-305
| A |
Nashua |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-305
| 0 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-305
| 1 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-305
| 2 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-305
| 3 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-305
| 4 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-305
| 5 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-305
| 6 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2003-02-08 |
|
| 603-305
| 7 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-305
| 8 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-305
| 9 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-306
| A |
Lebanon |
NH |
PTMONH073MD |
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-306
| 0 |
Lebanon |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
2007-01-17 |
|
| 603-306
| 1 |
Lebanon |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-06-05 |
|
| 603-306
| 2 |
Lebanon |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2009-01-05 |
|
| 603-306
| 3 |
Lebanon |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2015-02-28 |
|
| 603-306
| 4 |
Lebanon |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2010-07-07 |
|
| 603-306
| 5 |
Lebanon |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2014-05-10 |
|
| 603-306
| 6 |
Lebanon |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-03-03 |
|
| 603-306
| 7 |
Lebanon |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-03-03 |
|
| 603-306
| 8 |
Lebanon |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2011-09-21 |
|
| 603-306
| 9 |
Lebanon |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2011-10-04 |
|
| 603-307
| A |
North Conway |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-307
| 0 |
North Conway |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2016-06-01 |
|
| 603-307
| 1 |
North Conway |
NH |
|
793K TWC IP ENABLED SERVICES, LLC |
122 |
|
2016-10-27 |
|
| 603-307
| 2 |
North Conway |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-09-03 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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