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 |
| 603-589
| 3 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-589
| 4 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-589
| 5 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2006-12-30 |
|
| 603-589
| 6 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-589
| 7 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2007-07-20 |
|
| 603-589
| 8 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-589
| 9 |
Nashua |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
2012-04-24 |
|
| 603-590
| A |
Durham |
NH |
PTMONH073MD |
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-590
| 0 |
Durham |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-590
| 1 |
Durham |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-590
| 2 |
Durham |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-590
| 3 |
Durham |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2026-03-14 |
|
| 603-590
| 4 |
Durham |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-590
| 5 |
Durham |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-590
| 6 |
Durham |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-590
| 7 |
Durham |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-590
| 8 |
Durham |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-590
| 9 |
Durham |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-591
| A |
Manchester |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-591
| 0 |
Manchester |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-591
| 1 |
Manchester |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-591
| 2 |
Manchester |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-591
| 3 |
Manchester |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-591
| 4 |
Manchester |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-591
| 5 |
Manchester |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-591
| 6 |
Manchester |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-591
| 7 |
Manchester |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-591
| 8 |
Manchester |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-591
| 9 |
Manchester |
NH |
MNCHNHCO23Z |
073H TELNYX LLC |
122 |
|
2024-05-13 |
|
| 603-592
| A |
Spofford |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-592
| 1 |
Spofford |
NH |
MNCHNHAC7MD |
145J TERRA NOVA TELECOM INC. |
122 |
|
2024-12-28 |
|
| 603-592
| 4 |
Spofford |
NH |
PTMONH073MD |
9827 OTEL TELEKOM, INC. - NH |
122 |
|
2002-09-19 |
|
| 603-592
| 5 |
Spofford |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2005-08-29 |
|
| 603-592
| 7 |
Spofford |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2025-08-30 |
|
| 603-592
| 9 |
Spofford |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-593
| A |
Jaffrey |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2025-04-30 |
|
| 603-593
| 0 |
Jaffrey |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2003-11-15 |
|
| 603-593
| 1 |
Jaffrey |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2003-08-31 |
|
| 603-593
| 2 |
Jaffrey |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2009-01-05 |
|
| 603-593
| 3 |
Jaffrey |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2004-09-04 |
|
| 603-593
| 4 |
Jaffrey |
NH |
DOVRNHTHXEX |
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2011-10-07 |
|
| 603-593
| 5 |
Jaffrey |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
2006-10-31 |
|
| 603-593
| 6 |
Jaffrey |
NH |
PTMONH073MD |
9827 OTEL TELEKOM, INC. - NH |
122 |
|
2007-06-04 |
|
| 603-593
| 7 |
Jaffrey |
NH |
MNCHNHCO23Z |
073H TELNYX LLC |
122 |
|
2024-07-07 |
|
| 603-593
| 8 |
Jaffrey |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2016-08-24 |
|
| 603-593
| 9 |
Jaffrey |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2014-02-18 |
|
| 603-594
| A |
Nashua |
NH |
NASHNHWPDS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-595
| A |
Nashua |
NH |
NASHNHWPDS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-596
| A |
Nashua |
NH |
NASHNHWPDS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-597
| A |
Lyme |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
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Last updated: Tue, 31 Mar 2026 13:56:49 UTC
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