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 |
| 603-459
| 1 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-459
| 2 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-459
| 3 |
Nashua |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2005-07-02 |
|
| 603-459
| 4 |
Nashua |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2005-05-02 |
|
| 603-459
| 5 |
Nashua |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2006-11-02 |
|
| 603-459
| 6 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-459
| 7 |
Nashua |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2026-05-29 |
|
| 603-459
| 8 |
Nashua |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
2005-04-15 |
|
| 603-459
| 9 |
Nashua |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2005-04-01 |
|
| 603-460
| A |
Deerfield |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-460
| 2 |
Deerfield |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2025-08-30 |
|
| 603-460
| 4 |
Deerfield |
NH |
MNCHNHCOXCZ |
996E BANDWIDTH.COM CLEC, LLC - NH |
122 |
|
2002-09-10 |
|
| 603-460
| 5 |
Deerfield |
NH |
MNCHNHCOXCZ |
996E BANDWIDTH.COM CLEC, LLC - NH |
122 |
|
2016-04-08 |
|
| 603-460
| 7 |
Deerfield |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2025-10-03 |
|
| 603-460
| 9 |
Deerfield |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-461
| A |
Merrimack |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-461
| 0 |
Merrimack |
NH |
MNCHNHCOCM1 |
5562 METROPCS, INC. |
122 |
|
2017-01-21 |
|
| 603-461
| 1 |
Merrimack |
NH |
MNCHNHCOCM1 |
5562 METROPCS, INC. |
122 |
|
2008-12-15 |
|
| 603-461
| 2 |
Merrimack |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-461
| 3 |
Merrimack |
NH |
MNCHNHCOX9Z |
637E ONVOY, LLC - NH |
122 |
|
2023-07-10 |
|
| 603-461
| 4 |
Merrimack |
NH |
MNCHNHCOCM1 |
5562 METROPCS, INC. |
122 |
|
2014-12-18 |
|
| 603-461
| 5 |
Merrimack |
NH |
MNCHNHCOX9Z |
637E ONVOY, LLC - NH |
122 |
|
2023-05-08 |
|
| 603-461
| 6 |
Merrimack |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-461
| 8 |
Merrimack |
NH |
MNCHNHCOX9Z |
637E ONVOY, LLC - NH |
122 |
|
2023-08-20 |
|
| 603-461
| 9 |
Merrimack |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2023-12-08 |
|
| 603-462
| A |
Deerfield |
NH |
PTMONH073MD |
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-462
| 0 |
Deerfield |
NH |
PTMONH073MD |
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-462
| 1 |
Deerfield |
NH |
PTMONH073MD |
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-462
| 2 |
Deerfield |
NH |
PTMONH073MD |
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-462
| 3 |
Deerfield |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2026-06-04 |
|
| 603-463
| A |
Deerfield |
NH |
DRFDNHCCRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-463
| 0 |
Deerfield |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2005-09-10 |
|
| 603-463
| 1 |
Deerfield |
NH |
ROCHNHWE4MD |
314C IDT AMERICA, CORP. - NH |
122 |
|
2008-04-18 |
|
| 603-463
| 3 |
Deerfield |
NH |
DRFDNHCCRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-463
| 4 |
Deerfield |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2021-05-27 |
|
| 603-463
| 5 |
Deerfield |
NH |
DRFDNHCCRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-463
| 6 |
Deerfield |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2003-03-23 |
|
| 603-463
| 7 |
Deerfield |
NH |
DRFDNHCCRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-463
| 8 |
Deerfield |
NH |
DRFDNHCCRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-463
| 9 |
Deerfield |
NH |
DRFDNHCCRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-464
| A |
Hillsboro |
NH |
HLBONHXARP0 |
3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY |
122 |
|
|
|
| 603-464
| 0 |
Hillsboro |
NH |
HLBONHXARP0 |
3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY |
122 |
|
|
|
| 603-464
| 1 |
Hillsboro |
NH |
HLBONHXARP0 |
3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY |
122 |
|
|
|
| 603-464
| 2 |
Hillsboro |
NH |
HLBONHXARP0 |
3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY |
122 |
|
|
|
| 603-464
| 3 |
Hillsboro |
NH |
HLBONHXARP0 |
3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY |
122 |
|
|
|
| 603-464
| 4 |
Hillsboro |
NH |
HLBONHXARP0 |
3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY |
122 |
|
|
|
| 603-464
| 5 |
Hillsboro |
NH |
HLBONHXARP0 |
3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY |
122 |
|
|
|
| 603-464
| 6 |
Hillsboro |
NH |
HLBONHXARP0 |
3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY |
122 |
|
|
|
| 603-464
| 7 |
Hillsboro |
NH |
HLBONHXARP0 |
3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY |
122 |
|
|
|
| 603-464
| 9 |
Hillsboro |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
2004-07-27 |
|
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Last updated: Tue, 16 Jun 2026 00:09:45 UTC
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