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 |
| 603-952
| 6 |
Salem |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2012-10-05 |
|
| 603-952
| 7 |
Salem |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2014-06-19 |
|
| 603-952
| 8 |
Salem |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2014-10-16 |
|
| 603-952
| 9 |
Salem |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2013-12-05 |
|
| 603-953
| A |
Dover |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2025-04-30 |
|
| 603-953
| 0 |
Dover |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-953
| 1 |
Dover |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-953
| 2 |
Dover |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-953
| 3 |
Dover |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2004-12-03 |
|
| 603-953
| 4 |
Dover |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2005-11-22 |
|
| 603-953
| 5 |
Dover |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2006-11-02 |
|
| 603-953
| 6 |
Dover |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2007-09-01 |
|
| 603-953
| 7 |
Dover |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2008-02-03 |
|
| 603-953
| 8 |
Dover |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-04-14 |
|
| 603-953
| 9 |
Dover |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-956
| A |
Portsmouth |
NH |
MNCHNHCO18Z |
197D VONAGE AMERICA LLC |
122 |
|
|
|
| 603-956
| 0 |
Portsmouth |
NH |
|
939H COMMIO, LLC |
122 |
|
2022-11-24 |
|
| 603-956
| 1 |
Portsmouth |
NH |
|
073H TELNYX LLC |
122 |
|
2022-12-15 |
|
| 603-956
| 2 |
Portsmouth |
NH |
|
197D VONAGE AMERICA LLC |
122 |
|
2022-09-23 |
|
| 603-956
| 3 |
Portsmouth |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-09-29 |
|
| 603-956
| 4 |
Portsmouth |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-09-29 |
|
| 603-956
| 5 |
Portsmouth |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-12-23 |
|
| 603-956
| 6 |
Portsmouth |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2023-08-20 |
|
| 603-956
| 7 |
Portsmouth |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2023-05-08 |
|
| 603-956
| 8 |
Portsmouth |
NH |
|
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2024-01-02 |
|
| 603-956
| 9 |
Portsmouth |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2023-06-23 |
|
| 603-957
| A |
Portsmouth |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
|
|
| 603-957
| 0 |
Portsmouth |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
|
|
| 603-957
| 1 |
Portsmouth |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
|
|
| 603-957
| 2 |
Portsmouth |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2015-11-28 |
|
| 603-957
| 3 |
Portsmouth |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2006-03-20 |
|
| 603-957
| 4 |
Portsmouth |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
2008-09-24 |
|
| 603-957
| 5 |
Portsmouth |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
2009-07-15 |
|
| 603-957
| 6 |
Portsmouth |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2011-06-19 |
|
| 603-957
| 7 |
Portsmouth |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2011-06-19 |
|
| 603-957
| 8 |
Portsmouth |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2009-07-03 |
|
| 603-957
| 9 |
Portsmouth |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2017-02-17 |
|
| 603-960
| A |
Campton |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-960
| 0 |
Campton |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-03-16 |
|
| 603-960
| 1 |
Campton |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-07-03 |
|
| 603-960
| 2 |
Campton |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-10-03 |
|
| 603-960
| 4 |
Campton |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2011-05-14 |
|
| 603-960
| 8 |
Campton |
NH |
|
073H TELNYX LLC |
122 |
|
2024-07-27 |
|
| 603-960
| 9 |
Campton |
NH |
|
793K TWC IP ENABLED SERVICES, LLC |
122 |
|
2012-10-02 |
|
| 603-961
| A |
Chichester |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
|
|
| 603-961
| 0 |
Chichester |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2010-01-25 |
|
| 603-964
| A |
Rye Beach |
NH |
RYBHNHCEDS0 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-964
| 0 |
Rye Beach |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2011-11-04 |
|
| 603-964
| 1 |
Rye Beach |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-964
| 2 |
Rye Beach |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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