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 |
| 603-868
| A |
Durham |
NH |
DRHMNHMCRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-869
| A |
Bethlehem |
NH |
BHLHNHCRRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-869
| 0 |
Bethlehem |
NH |
MNCHNHCO42Z |
793K TWC IP ENABLED SERVICES, LLC |
122 |
|
2012-10-02 |
|
| 603-869
| 2 |
Bethlehem |
NH |
BHLHNHCRRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-869
| 3 |
Bethlehem |
NH |
BHLHNHCRRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-869
| 4 |
Bethlehem |
NH |
PTMONH073MD |
9827 OTEL TELEKOM, INC. - NH |
122 |
|
2002-09-10 |
|
| 603-869
| 5 |
Bethlehem |
NH |
BHLHNHCRRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-869
| 6 |
Bethlehem |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2021-05-27 |
|
| 603-869
| 7 |
Bethlehem |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2004-09-03 |
|
| 603-869
| 8 |
Bethlehem |
NH |
|
5562 METROPCS, INC. |
122 |
|
2025-05-02 |
|
| 603-869
| 9 |
Bethlehem |
NH |
BHLHNHCRRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-870
| A |
Salem |
NH |
SALMNHNBDS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-871
| A |
Sanbornville |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
| 603-871
| 3 |
Sanbornville |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2013-08-18 |
|
| 603-871
| 4 |
Sanbornville |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
| 603-871
| 8 |
Sanbornville |
NH |
DOVRNHTHXMX |
793K TWC IP ENABLED SERVICES, LLC |
122 |
|
2012-10-02 |
|
| 603-872
| A |
Gilmanton Iron Works |
NH |
ROCHNHWE4MD |
314C IDT AMERICA, CORP. - NH |
122 |
|
|
|
| 603-872
| 2 |
Gilmanton Iron Works |
NH |
ROCHNHWE4MD |
314C IDT AMERICA, CORP. - NH |
122 |
|
2009-12-18 |
|
| 603-873
| A |
Sunapee |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
| 603-873
| 0 |
Sunapee |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2005-09-15 |
|
| 603-873
| 4 |
Sunapee |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
| 603-873
| 8 |
Sunapee |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2026-02-19 |
|
| 603-874
| A |
Monroe |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
| 603-874
| 1 |
Monroe |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2005-09-15 |
|
| 603-874
| 4 |
Monroe |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
| 603-875
| A |
Alton |
NH |
ALTNNHXARP0 |
0049 UNION TEL. CO. |
122 |
|
|
|
| 603-875
| 0 |
Alton |
NH |
ALTNNHXARP0 |
0049 UNION TEL. CO. |
122 |
|
|
|
| 603-875
| 2 |
Alton |
NH |
ALTNNHXARP0 |
0049 UNION TEL. CO. |
122 |
|
|
|
| 603-875
| 3 |
Alton |
NH |
ALTNNHXARP0 |
0049 UNION TEL. CO. |
122 |
|
|
|
| 603-875
| 5 |
Alton |
NH |
ALTNNHXARP0 |
0049 UNION TEL. CO. |
122 |
|
|
|
| 603-875
| 6 |
Alton |
NH |
ALTNNHXARP0 |
0049 UNION TEL. CO. |
122 |
|
|
|
| 603-875
| 7 |
Alton |
NH |
ALTNNHXARP0 |
0049 UNION TEL. CO. |
122 |
|
|
|
| 603-875
| 8 |
Alton |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2026-03-14 |
|
| 603-875
| 9 |
Alton |
NH |
ALTNNHXARP0 |
0049 UNION TEL. CO. |
122 |
|
|
|
| 603-876
| A |
Marlborough |
NH |
MRBONHYARS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-876
| 2 |
Marlborough |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2001-03-26 |
|
| 603-876
| 3 |
Marlborough |
NH |
MRBONHYARS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-876
| 4 |
Marlborough |
NH |
MRBONHYARS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-876
| 5 |
Marlborough |
NH |
MNCHNHCO42Z |
793K TWC IP ENABLED SERVICES, LLC |
122 |
|
2012-10-02 |
|
| 603-876
| 6 |
Marlborough |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2004-09-04 |
|
| 603-876
| 8 |
Marlborough |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2021-05-27 |
|
| 603-876
| 9 |
Marlborough |
NH |
MRBONHYARS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-877
| A |
New London |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
|
|
| 603-877
| 0 |
New London |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
2010-01-25 |
|
| 603-877
| 1 |
New London |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
2023-04-17 |
|
| 603-877
| 2 |
New London |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2026-03-02 |
|
| 603-877
| 7 |
New London |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2025-07-11 |
|
| 603-877
| 8 |
New London |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2021-03-10 |
|
| 603-877
| 9 |
New London |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2021-03-10 |
|
| 603-878
| A |
Greenville |
NH |
GNVLNHADRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
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Last updated: Tue, 31 Mar 2026 13:56:49 UTC
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