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 |
| 603-287
| 3 |
Claremont |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2020-08-10 |
|
| 603-287
| 4 |
Claremont |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
| 603-287
| 5 |
Claremont |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2010-02-26 |
|
| 603-287
| 7 |
Claremont |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2015-09-14 |
|
| 603-287
| 8 |
Claremont |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2011-07-18 |
|
| 603-287
| 9 |
Claremont |
NH |
|
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2019-05-17 |
|
| 603-288
| A |
Nashua |
NH |
MNCHNHCO18Z |
197D VONAGE AMERICA LLC |
122 |
|
|
|
| 603-288
| 0 |
Nashua |
NH |
|
197D VONAGE AMERICA LLC |
122 |
|
2017-08-26 |
|
| 603-288
| 1 |
Nashua |
NH |
|
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
2017-12-22 |
|
| 603-288
| 2 |
Nashua |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2019-11-27 |
|
| 603-288
| 3 |
Nashua |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2020-03-19 |
|
| 603-288
| 4 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2020-12-01 |
|
| 603-288
| 5 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2020-12-01 |
|
| 603-288
| 6 |
Nashua |
NH |
|
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
2020-10-31 |
|
| 603-288
| 7 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2020-09-24 |
|
| 603-288
| 8 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2020-09-24 |
|
| 603-288
| 9 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2020-09-24 |
|
| 603-289
| A |
Manchester |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
|
|
| 603-290
| A |
Concord |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-290
| 0 |
Concord |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2008-10-30 |
|
| 603-290
| 1 |
Concord |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2008-10-30 |
|
| 603-290
| 2 |
Concord |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2008-10-30 |
|
| 603-290
| 3 |
Concord |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2008-09-19 |
|
| 603-290
| 4 |
Concord |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2009-11-11 |
|
| 603-290
| 5 |
Concord |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2010-09-27 |
|
| 603-290
| 6 |
Concord |
NH |
|
490J DISH WIRELESS, LLC |
122 |
|
2023-10-27 |
|
| 603-290
| 7 |
Concord |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-290
| 8 |
Concord |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-290
| 9 |
Concord |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2016-12-10 |
|
| 603-291
| A |
Greenville |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
|
|
| 603-291
| 0 |
Greenville |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2006-12-10 |
|
| 603-291
| 1 |
Greenville |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2007-09-11 |
|
| 603-291
| 2 |
Greenville |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2015-08-04 |
|
| 603-291
| 3 |
Greenville |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
2013-08-30 |
|
| 603-291
| 7 |
Greenville |
NH |
|
490J DISH WIRELESS, LLC |
122 |
|
2024-01-14 |
|
| 603-291
| 9 |
Greenville |
NH |
|
073H TELNYX LLC |
122 |
|
2024-07-01 |
|
| 603-292
| A |
Newmarket |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
|
|
| 603-292
| 0 |
Newmarket |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2001-03-09 |
|
| 603-292
| 1 |
Newmarket |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
2001-07-25 |
|
| 603-292
| 2 |
Newmarket |
NH |
|
9827 OTEL TELEKOM, INC. - NH |
122 |
|
2011-03-07 |
|
| 603-292
| 3 |
Newmarket |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2004-09-04 |
|
| 603-292
| 4 |
Newmarket |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2021-05-27 |
|
| 603-292
| 5 |
Newmarket |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
|
|
| 603-292
| 6 |
Newmarket |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2006-05-27 |
|
| 603-292
| 7 |
Newmarket |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2005-11-14 |
|
| 603-292
| 8 |
Newmarket |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2004-10-15 |
|
| 603-292
| 9 |
Newmarket |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2001-09-10 |
|
| 603-293
| A |
Laconia |
NH |
GLDLNHABRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-293
| 0 |
Laconia |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-293
| 2 |
Laconia |
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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