Local Calling Guide
Area code/prefix search
NPA: 603
[Rate centres in NPA 603]
[Dial plan for NPA 603]
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 603-324
| A |
Nashua |
NH |
MNCHNHCO40Z |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
122 |
|
|
|
| 603-324
| 0 |
Nashua |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-324
| 1 |
Nashua |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-324
| 2 |
Nashua |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-324
| 3 |
Nashua |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-324
| 4 |
Nashua |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-324
| 5 |
Nashua |
NH |
MNCHNHCOXCZ |
996E BANDWIDTH.COM CLEC, LLC - NH |
122 |
|
2006-06-22 |
|
| 603-324
| 6 |
Nashua |
NH |
MNCHNHCO40Z |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
122 |
|
|
|
| 603-324
| 7 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2011-09-26 |
|
| 603-324
| 8 |
Nashua |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-324
| 9 |
Nashua |
NH |
MNCHNHCOCM1 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2011-11-21 |
|
| 603-325
| A |
New Boston |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-325
| 0 |
New Boston |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2007-01-02 |
|
| 603-325
| 1 |
New Boston |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2007-04-19 |
|
| 603-325
| 2 |
New Boston |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2004-07-02 |
|
| 603-325
| 3 |
New Boston |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2007-04-19 |
|
| 603-325
| 4 |
New Boston |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2003-03-23 |
|
| 603-325
| 5 |
New Boston |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2003-05-17 |
|
| 603-325
| 6 |
New Boston |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2026-01-15 |
|
| 603-325
| 7 |
New Boston |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2012-11-01 |
|
| 603-325
| 8 |
New Boston |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2005-09-01 |
|
| 603-325
| 9 |
New Boston |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-326
| A |
Berlin |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
| 603-326
| 0 |
Berlin |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2004-10-03 |
|
| 603-326
| 1 |
Berlin |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2004-08-12 |
|
| 603-326
| 2 |
Berlin |
NH |
PTMONH073MD |
9827 OTEL TELEKOM, INC. - NH |
122 |
|
2002-09-10 |
|
| 603-326
| 3 |
Berlin |
NH |
MNCHNHAC7MD |
145J TERRA NOVA TELECOM INC. |
122 |
|
2024-04-24 |
|
| 603-326
| 4 |
Berlin |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
| 603-326
| 5 |
Berlin |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2003-09-09 |
|
| 603-326
| 6 |
Berlin |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2005-07-01 |
|
| 603-326
| 7 |
Berlin |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2007-10-12 |
|
| 603-326
| 8 |
Berlin |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2009-01-05 |
|
| 603-326
| 9 |
Berlin |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
2007-03-14 |
|
| 603-327
| A |
Salem |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2025-04-30 |
|
| 603-327
| 0 |
Salem |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-327
| 1 |
Salem |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2015-06-01 |
|
| 603-327
| 2 |
Salem |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2026-03-23 |
|
| 603-327
| 3 |
Salem |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2026-03-09 |
|
| 603-327
| 4 |
Salem |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-03-03 |
|
| 603-327
| 5 |
Salem |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2011-03-04 |
|
| 603-327
| 6 |
Salem |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2014-04-01 |
|
| 603-327
| 7 |
Salem |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2005-07-02 |
|
| 603-327
| 8 |
Salem |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2013-06-28 |
|
| 603-327
| 9 |
Salem |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2012-05-01 |
|
| 603-328
| A |
Salem |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2025-04-30 |
|
| 603-328
| 0 |
Salem |
NH |
PTMONH073MD |
9827 OTEL TELEKOM, INC. - NH |
122 |
|
2005-01-24 |
|
| 603-328
| 1 |
Salem |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-328
| 2 |
Salem |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-328
| 3 |
Salem |
NH |
MNCHNHCOX1Y |
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2004-04-18 |
|
| 603-328
| 4 |
Salem |
NH |
MNCHNHCOX9Z |
637E ONVOY, LLC - NH |
122 |
|
2023-02-09 |
|
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 >>
Last updated: Tue, 16 Jun 2026 00:09:45 UTC
Sponsored by: ISP Telecom
Like this site? We accept donations via PayPal.