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 |
| 603-333
| 8 |
Concord |
NH |
|
197D VONAGE AMERICA LLC |
122 |
|
2018-12-06 |
|
| 603-333
| 9 |
Concord |
NH |
|
197D VONAGE AMERICA LLC |
122 |
|
2018-12-06 |
|
| 603-334
| A |
Portsmouth |
NH |
PTMONHISDS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-334
| 0 |
Portsmouth |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-334
| 1 |
Portsmouth |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2001-05-01 |
|
| 603-334
| 2 |
Portsmouth |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-334
| 3 |
Portsmouth |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-334
| 4 |
Portsmouth |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-334
| 5 |
Portsmouth |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-334
| 6 |
Portsmouth |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-334
| 7 |
Portsmouth |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-334
| 8 |
Portsmouth |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-334
| 9 |
Portsmouth |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-335
| A |
Rochester |
NH |
ROCHNHWEDS0 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-336
| A |
Hinsdale |
NH |
HNDLNHMARS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-336
| 1 |
Hinsdale |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2004-04-04 |
|
| 603-336
| 2 |
Hinsdale |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
2012-04-10 |
|
| 603-336
| 3 |
Hinsdale |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2004-09-04 |
|
| 603-336
| 5 |
Hinsdale |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-336
| 6 |
Hinsdale |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2007-01-30 |
|
| 603-336
| 7 |
Hinsdale |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-336
| 8 |
Hinsdale |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2022-01-04 |
|
| 603-336
| 9 |
Hinsdale |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-337
| A |
Rochester |
NH |
ROCHNHHIPS0 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-337
| 0 |
Rochester |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-337
| 1 |
Rochester |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-337
| 2 |
Rochester |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-337
| 3 |
Rochester |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-337
| 4 |
Rochester |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-337
| 5 |
Rochester |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2009-01-05 |
|
| 603-337
| 8 |
Rochester |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2026-01-22 |
|
| 603-337
| 9 |
Rochester |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-338
| A |
Keene |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-338
| 0 |
Keene |
NH |
|
793K TWC IP ENABLED SERVICES, LLC |
122 |
|
2015-09-14 |
|
| 603-338
| 1 |
Keene |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2021-09-30 |
|
| 603-338
| 2 |
Keene |
NH |
|
073H TELNYX LLC |
122 |
|
2022-10-08 |
|
| 603-338
| 3 |
Keene |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2023-04-06 |
|
| 603-338
| 4 |
Keene |
NH |
|
9827 OTEL TELEKOM, INC. - NH |
122 |
|
2002-09-19 |
|
| 603-338
| 5 |
Keene |
NH |
|
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2004-02-10 |
|
| 603-338
| 6 |
Keene |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-11-26 |
|
| 603-338
| 7 |
Keene |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2016-04-24 |
|
| 603-338
| 8 |
Keene |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2015-02-28 |
|
| 603-338
| 9 |
Keene |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-339
| A |
Derry |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
|
|
| 603-339
| 0 |
Derry |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
|
|
| 603-339
| 1 |
Derry |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
|
|
| 603-339
| 2 |
Derry |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
|
|
| 603-339
| 3 |
Derry |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2010-06-15 |
|
| 603-339
| 4 |
Derry |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2010-08-23 |
|
| 603-339
| 5 |
Derry |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2010-10-10 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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