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 |
| 603-605
| 9 |
Dover |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2021-07-02 |
|
| 603-606
| A |
Manchester |
NH |
DOVRNHTHGMD |
624H ONVOY SPECTRUM, LLC |
122 |
|
|
|
| 603-606
| 0 |
Manchester |
NH |
|
624H ONVOY SPECTRUM, LLC |
122 |
|
2019-12-02 |
|
| 603-606
| 1 |
Manchester |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2006-05-18 |
|
| 603-606
| 2 |
Manchester |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2006-05-18 |
|
| 603-606
| 3 |
Manchester |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2006-03-27 |
|
| 603-606
| 4 |
Manchester |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2004-09-13 |
|
| 603-606
| 5 |
Manchester |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-606
| 6 |
Manchester |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-606
| 7 |
Manchester |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2003-05-13 |
|
| 603-606
| 8 |
Manchester |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2017-05-26 |
|
| 603-606
| 9 |
Manchester |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2019-12-02 |
|
| 603-607
| A |
West Chesterfield |
NH |
DOVRNHTHXJX |
478J NUSO, LLC |
122 |
|
|
|
| 603-607
| 1 |
West Chesterfield |
NH |
|
478J NUSO, LLC |
122 |
|
2020-10-11 |
|
| 603-607
| 2 |
West Chesterfield |
NH |
|
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2023-11-13 |
|
| 603-607
| 5 |
West Chesterfield |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-12-23 |
|
| 603-607
| 6 |
West Chesterfield |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2021-05-23 |
|
| 603-607
| 7 |
West Chesterfield |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2021-08-02 |
|
| 603-608
| A |
Northwood |
NH |
MNCHNHCOCM1 |
5562 METROPCS, INC. |
122 |
|
|
|
| 603-608
| 1 |
Northwood |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2005-04-15 |
|
| 603-608
| 2 |
Northwood |
NH |
|
5562 METROPCS, INC. |
122 |
|
2005-10-30 |
|
| 603-608
| 3 |
Northwood |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2004-09-02 |
|
| 603-608
| 4 |
Northwood |
NH |
|
073H TELNYX LLC |
122 |
|
2024-07-07 |
|
| 603-608
| 5 |
Northwood |
NH |
|
5562 METROPCS, INC. |
122 |
|
2003-10-07 |
|
| 603-608
| 6 |
Northwood |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-608
| 7 |
Northwood |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-608
| 8 |
Northwood |
NH |
|
5562 METROPCS, INC. |
122 |
|
|
|
| 603-608
| 9 |
Northwood |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
|
|
| 603-609
| A |
Dover |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
|
|
| 603-609
| 0 |
Dover |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
| 603-609
| 1 |
Dover |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2004-11-08 |
|
| 603-609
| 3 |
Dover |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2020-12-05 |
|
| 603-609
| 4 |
Dover |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2024-05-09 |
|
| 603-609
| 5 |
Dover |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2008-11-18 |
|
| 603-609
| 6 |
Dover |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
2008-06-17 |
|
| 603-609
| 7 |
Dover |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2010-10-02 |
|
| 603-609
| 8 |
Dover |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2012-02-20 |
|
| 603-609
| 9 |
Dover |
NH |
|
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
2020-10-30 |
|
| 603-610
| A |
Portsmouth |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2025-04-30 |
|
| 603-610
| 0 |
Portsmouth |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-610
| 1 |
Portsmouth |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-610
| 2 |
Portsmouth |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-610
| 3 |
Portsmouth |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
2012-04-25 |
|
| 603-610
| 4 |
Portsmouth |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
2001-12-09 |
|
| 603-610
| 5 |
Portsmouth |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
2001-12-09 |
|
| 603-610
| 6 |
Portsmouth |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-610
| 7 |
Portsmouth |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
2004-04-19 |
|
| 603-610
| 8 |
Portsmouth |
NH |
|
8468 FREEDOM RING COMMUNICATIONS, LLC |
122 |
|
2004-04-19 |
|
| 603-610
| 9 |
Portsmouth |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-612
| A |
Plaistow |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2025-04-30 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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