Local Calling Guide
Area code/prefix search
NPA: 603
[Rate centres in NPA 603]
[Dial plan for NPA 603]
NXX: 287
NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
603-287
| A |
Claremont |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
603-287
| 0 |
Claremont |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2025-02-20 |
|
603-287
| 1 |
Claremont |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2005-09-10 |
|
603-287
| 2 |
Claremont |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2025-06-02 |
|
603-287
| 3 |
Claremont |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2020-08-10 |
|
603-287
| 4 |
Claremont |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
603-287
| 5 |
Claremont |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2010-02-26 |
|
603-287
| 7 |
Claremont |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
2015-09-14 |
|
603-287
| 8 |
Claremont |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
2011-07-18 |
|
603-287
| 9 |
Claremont |
NH |
DOVRNHTHXEX |
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2019-05-17 |
|
Last updated: Sun, 01 Jun 2025 02:18:11 UTC
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