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 |
| 603-474
| A |
Seabrook |
NH |
SBRKNHNRDS0 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-474
| 0 |
Seabrook |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-474
| 1 |
Seabrook |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-474
| 2 |
Seabrook |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-474
| 3 |
Seabrook |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-474
| 4 |
Seabrook |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2001-04-20 |
|
| 603-474
| 5 |
Seabrook |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-474
| 6 |
Seabrook |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-474
| 7 |
Seabrook |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-474
| 8 |
Seabrook |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-474
| 9 |
Seabrook |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-475
| A |
Salem |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-476
| A |
Center Sandwich |
NH |
MLBONHYARS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-476
| 2 |
Center Sandwich |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-476
| 3 |
Center Sandwich |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2004-09-04 |
|
| 603-476
| 4 |
Center Sandwich |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2016-07-20 |
|
| 603-476
| 5 |
Center Sandwich |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-476
| 7 |
Center Sandwich |
NH |
|
793K TWC IP ENABLED SERVICES, LLC |
122 |
|
2012-10-02 |
|
| 603-476
| 8 |
Center Sandwich |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-477
| A |
Claremont |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-478
| A |
Hillsboro Upper Village |
NH |
WEARNHXADS1 |
0039 GRANITE STATE TEL., INC. |
122 |
|
|
|
| 603-479
| A |
Derry |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
|
|
| 603-480
| A |
Manchester |
NH |
MNCHNHCOXCZ |
996E BANDWIDTH.COM CLEC, LLC - NH |
122 |
|
|
|
| 603-481
| A |
Plymouth |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-481
| 0 |
Plymouth |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-481
| 1 |
Plymouth |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-481
| 2 |
Plymouth |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-481
| 3 |
Plymouth |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2021-12-12 |
|
| 603-481
| 5 |
Plymouth |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2025-09-06 |
|
| 603-481
| 6 |
Plymouth |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-481
| 7 |
Plymouth |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2005-08-18 |
|
| 603-481
| 8 |
Plymouth |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2005-08-18 |
|
| 603-482
| A |
Errol |
NH |
ERRLNHYARS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-482
| 3 |
Errol |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-482
| 6 |
Errol |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2004-09-04 |
|
| 603-482
| 7 |
Errol |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2022-07-01 |
|
| 603-482
| 9 |
Errol |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
2014-06-20 |
|
| 603-483
| A |
Candia |
NH |
CANDNHDERS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-483
| 0 |
Candia |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-483
| 1 |
Candia |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-483
| 2 |
Candia |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-483
| 3 |
Candia |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2004-09-03 |
|
| 603-483
| 4 |
Candia |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2026-01-10 |
|
| 603-483
| 5 |
Candia |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-483
| 6 |
Candia |
NH |
|
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2002-11-15 |
|
| 603-483
| 7 |
Candia |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
2013-02-15 |
|
| 603-483
| 8 |
Candia |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-483
| 9 |
Candia |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2019-01-07 |
|
| 603-484
| A |
Nashua |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-484
| 0 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2017-09-18 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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