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 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 603-397
| 8 |
Durham |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2012-10-12 |
|
| 603-397
| 9 |
Durham |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-11-03 |
|
| 603-398
| A |
West Lebanon |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-399
| A |
Westmoreland |
NH |
WMLDNHWERS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-399
| 1 |
Westmoreland |
NH |
|
793K TWC IP ENABLED SERVICES, LLC |
122 |
|
2024-01-07 |
|
| 603-399
| 2 |
Westmoreland |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2021-05-28 |
|
| 603-399
| 3 |
Westmoreland |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2002-10-14 |
|
| 603-399
| 4 |
Westmoreland |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-399
| 5 |
Westmoreland |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2004-09-05 |
|
| 603-399
| 6 |
Westmoreland |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2005-09-12 |
|
| 603-399
| 7 |
Westmoreland |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-399
| 8 |
Westmoreland |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2006-08-21 |
|
| 603-399
| 9 |
Westmoreland |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-400
| A |
Hollis |
NH |
MNCHNHCO43Z |
792K CHARTER IP ENABLED SERVICES, LLC |
122 |
|
|
|
| 603-400
| 0 |
Hollis |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2011-10-18 |
|
| 603-400
| 1 |
Hollis |
NH |
|
792K CHARTER IP ENABLED SERVICES, LLC |
122 |
|
2011-10-15 |
|
| 603-400
| 2 |
Hollis |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2013-11-04 |
|
| 603-400
| 3 |
Hollis |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2017-04-29 |
|
| 603-400
| 4 |
Hollis |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2017-02-27 |
|
| 603-400
| 5 |
Hollis |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2016-10-01 |
|
| 603-400
| 6 |
Hollis |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2016-07-09 |
|
| 603-400
| 7 |
Hollis |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2016-03-26 |
|
| 603-400
| 8 |
Hollis |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2015-09-22 |
|
| 603-400
| 9 |
Hollis |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2014-11-11 |
|
| 603-401
| A |
Salem |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-401
| 0 |
Salem |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-401
| 1 |
Salem |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-401
| 2 |
Salem |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2003-07-05 |
|
| 603-401
| 3 |
Salem |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2003-11-19 |
|
| 603-401
| 4 |
Salem |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-401
| 5 |
Salem |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2004-11-04 |
|
| 603-401
| 6 |
Salem |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2006-07-03 |
|
| 603-401
| 7 |
Salem |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-401
| 8 |
Salem |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-401
| 9 |
Salem |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-402
| A |
Nashua |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-402
| 0 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2013-06-30 |
|
| 603-402
| 1 |
Nashua |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2013-01-06 |
|
| 603-402
| 2 |
Nashua |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2014-04-12 |
|
| 603-402
| 3 |
Nashua |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2013-05-12 |
|
| 603-402
| 4 |
Nashua |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2015-04-15 |
|
| 603-402
| 5 |
Nashua |
NH |
|
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2013-04-22 |
|
| 603-402
| 6 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2016-02-03 |
|
| 603-402
| 7 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2013-06-19 |
|
| 603-402
| 8 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2017-08-14 |
|
| 603-402
| 9 |
Nashua |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2013-09-19 |
|
| 603-403
| A |
Rochester |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
|
|
| 603-403
| 0 |
Rochester |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2019-09-20 |
|
| 603-403
| 1 |
Rochester |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2018-09-14 |
|
| 603-403
| 2 |
Rochester |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2020-11-19 |
|
<< 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 >>
Last updated: Thu, 29 Jan 2026 14:35:03 UTC
Sponsored by: LES.NET
Like this site? We accept donations via PayPal.