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 |
| 603-612
| 0 |
Plaistow |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2000-05-24 |
|
| 603-612
| 1 |
Plaistow |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2002-07-24 |
|
| 603-612
| 4 |
Plaistow |
NH |
|
9827 OTEL TELEKOM, INC. - NH |
122 |
|
2002-09-20 |
|
| 603-612
| 6 |
Plaistow |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-612
| 8 |
Plaistow |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2025-09-09 |
|
| 603-613
| A |
Colebrook |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-613
| 1 |
Colebrook |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2024-10-11 |
|
| 603-613
| 3 |
Colebrook |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2023-11-11 |
|
| 603-613
| 4 |
Colebrook |
NH |
|
9827 OTEL TELEKOM, INC. - NH |
122 |
|
2002-09-10 |
|
| 603-613
| 5 |
Colebrook |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2025-07-24 |
|
| 603-613
| 9 |
Colebrook |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-614
| A |
West Chesterfield |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
| 603-614
| 2 |
West Chesterfield |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2023-08-09 |
|
| 603-614
| 3 |
West Chesterfield |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2006-08-21 |
|
| 603-614
| 4 |
West Chesterfield |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
| 603-614
| 5 |
West Chesterfield |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2023-07-06 |
|
| 603-614
| 6 |
West Chesterfield |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
2018-08-12 |
|
| 603-614
| 8 |
West Chesterfield |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2007-01-12 |
|
| 603-615
| A |
Manchester |
NH |
MNCHNHCODS2 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-616
| A |
Littleton |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-616
| 0 |
Littleton |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2024-11-22 |
|
| 603-616
| 1 |
Littleton |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-616
| 2 |
Littleton |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-616
| 3 |
Littleton |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-616
| 4 |
Littleton |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-616
| 5 |
Littleton |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-616
| 6 |
Littleton |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-616
| 7 |
Littleton |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-616
| 8 |
Littleton |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-616
| 9 |
Littleton |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-617
| A |
Dover |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2025-04-30 |
|
| 603-617
| 0 |
Dover |
NH |
|
5562 METROPCS, INC. |
122 |
|
2005-05-28 |
|
| 603-617
| 1 |
Dover |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2001-05-01 |
|
| 603-617
| 2 |
Dover |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2005-07-09 |
|
| 603-617
| 3 |
Dover |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2005-07-09 |
|
| 603-617
| 4 |
Dover |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2003-03-23 |
|
| 603-617
| 5 |
Dover |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2020-12-05 |
|
| 603-617
| 6 |
Dover |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2006-12-04 |
|
| 603-617
| 7 |
Dover |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-617
| 8 |
Dover |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2006-12-04 |
|
| 603-617
| 9 |
Dover |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2006-09-20 |
|
| 603-618
| A |
Pike |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
| 603-618
| 4 |
Pike |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
| 603-619
| A |
Laconia |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
|
|
| 603-619
| 0 |
Laconia |
NH |
|
939H COMMIO, LLC |
122 |
|
2022-10-17 |
|
| 603-619
| 1 |
Laconia |
NH |
|
073H TELNYX LLC |
122 |
|
2022-10-17 |
|
| 603-619
| 2 |
Laconia |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-10-17 |
|
| 603-619
| 3 |
Laconia |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-10-17 |
|
| 603-619
| 4 |
Laconia |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-12-23 |
|
| 603-619
| 5 |
Laconia |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2022-11-03 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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