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 |
| 603-597
| 8 |
Lyme |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2025-10-31 |
|
| 603-597
| 9 |
Lyme |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-598
| A |
Nashua |
NH |
NASHNHWPDS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-599
| A |
Nashua |
NH |
NASHNHWPDS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-600
| A |
Manchester |
NH |
MNCHNHAC3MD |
939H COMMIO, LLC |
122 |
|
|
|
| 603-600
| 0 |
Manchester |
NH |
|
939H COMMIO, LLC |
122 |
|
2020-07-26 |
|
| 603-600
| 1 |
Manchester |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2021-01-02 |
|
| 603-600
| 2 |
Manchester |
NH |
|
624H ONVOY SPECTRUM, LLC |
122 |
|
2020-10-22 |
|
| 603-600
| 3 |
Manchester |
NH |
|
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
2020-10-30 |
|
| 603-600
| 4 |
Manchester |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2021-01-02 |
|
| 603-600
| 5 |
Manchester |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2020-12-04 |
|
| 603-600
| 6 |
Manchester |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2020-10-15 |
|
| 603-600
| 7 |
Manchester |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2020-11-01 |
|
| 603-600
| 8 |
Manchester |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2021-02-03 |
|
| 603-600
| 9 |
Manchester |
NH |
|
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
2021-01-09 |
|
| 603-601
| A |
Hampton |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2025-04-30 |
|
| 603-601
| 0 |
Hampton |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2001-04-09 |
|
| 603-601
| 1 |
Hampton |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2004-02-21 |
|
| 603-601
| 2 |
Hampton |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2002-08-05 |
|
| 603-601
| 3 |
Hampton |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2011-02-23 |
|
| 603-601
| 4 |
Hampton |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2005-09-05 |
|
| 603-601
| 5 |
Hampton |
NH |
|
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2013-01-14 |
|
| 603-601
| 6 |
Hampton |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2006-09-09 |
|
| 603-601
| 7 |
Hampton |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2011-06-03 |
|
| 603-601
| 8 |
Hampton |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2013-07-08 |
|
| 603-601
| 9 |
Hampton |
NH |
|
073H TELNYX LLC |
122 |
|
2022-10-23 |
|
| 603-602
| A |
Rochester |
NH |
DOVRNHTHXEX |
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
|
|
| 603-602
| 0 |
Rochester |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-08-19 |
|
| 603-602
| 1 |
Rochester |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-08-19 |
|
| 603-602
| 2 |
Rochester |
NH |
|
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2021-02-08 |
|
| 603-602
| 3 |
Rochester |
NH |
|
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2021-02-08 |
|
| 603-602
| 4 |
Rochester |
NH |
|
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2021-02-08 |
|
| 603-602
| 5 |
Rochester |
NH |
|
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2021-02-05 |
|
| 603-602
| 6 |
Rochester |
NH |
|
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2021-02-05 |
|
| 603-602
| 7 |
Rochester |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2021-05-07 |
|
| 603-602
| 8 |
Rochester |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-08-19 |
|
| 603-602
| 9 |
Rochester |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-08-19 |
|
| 603-604
| A |
Rye Beach |
NH |
RYBHNHCEPS0 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-604
| 0 |
Rye Beach |
NH |
|
073H TELNYX LLC |
122 |
|
2024-07-04 |
|
| 603-604
| 4 |
Rye Beach |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
2024-09-13 |
|
| 603-604
| 6 |
Rye Beach |
NH |
|
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2019-06-20 |
|
| 603-605
| A |
Dover |
NH |
MNCHNHBODS0 |
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
|
|
| 603-605
| 0 |
Dover |
NH |
|
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
2017-07-21 |
|
| 603-605
| 1 |
Dover |
NH |
|
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
2017-01-30 |
|
| 603-605
| 3 |
Dover |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
2018-08-28 |
|
| 603-605
| 4 |
Dover |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2019-12-13 |
|
| 603-605
| 5 |
Dover |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2020-08-30 |
|
| 603-605
| 6 |
Dover |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2019-03-20 |
|
| 603-605
| 7 |
Dover |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2021-07-02 |
|
| 603-605
| 8 |
Dover |
NH |
|
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
2017-09-14 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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