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 |
| 603-545
| 2 |
Concord |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2007-08-02 |
|
| 603-545
| 3 |
Concord |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-545
| 4 |
Concord |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2006-12-02 |
|
| 603-545
| 5 |
Concord |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2006-03-04 |
|
| 603-545
| 6 |
Concord |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-545
| 7 |
Concord |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2006-07-03 |
|
| 603-545
| 8 |
Concord |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2007-02-02 |
|
| 603-545
| 9 |
Concord |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2007-07-02 |
|
| 603-546
| A |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2025-04-30 |
|
| 603-546
| 0 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-546
| 1 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-546
| 2 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-546
| 3 |
Nashua |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2025-05-07 |
|
| 603-546
| 4 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2005-11-11 |
|
| 603-546
| 5 |
Nashua |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2004-04-07 |
|
| 603-546
| 6 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-546
| 7 |
Nashua |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2005-08-29 |
|
| 603-546
| 8 |
Nashua |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2004-04-07 |
|
| 603-546
| 9 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
| 603-547
| A |
Greenfield |
NH |
GNFDNHMARS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-547
| 0 |
Greenfield |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2004-01-19 |
|
| 603-547
| 1 |
Greenfield |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2002-12-04 |
|
| 603-547
| 2 |
Greenfield |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-547
| 3 |
Greenfield |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-547
| 4 |
Greenfield |
NH |
|
9827 OTEL TELEKOM, INC. - NH |
122 |
|
2002-09-19 |
|
| 603-547
| 5 |
Greenfield |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2003-05-17 |
|
| 603-547
| 6 |
Greenfield |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-547
| 7 |
Greenfield |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2004-08-02 |
|
| 603-547
| 8 |
Greenfield |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-547
| 9 |
Greenfield |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2004-09-04 |
|
| 603-548
| A |
Derry |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-549
| A |
Derry |
NH |
DRRYNHEBDS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-550
| A |
Dover |
NH |
MNCHNHCO22Z |
073H TELNYX LLC |
122 |
|
|
|
| 603-550
| 0 |
Dover |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2022-01-22 |
|
| 603-550
| 1 |
Dover |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2022-01-22 |
|
| 603-550
| 2 |
Dover |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2022-01-22 |
|
| 603-550
| 3 |
Dover |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2022-01-22 |
|
| 603-550
| 4 |
Dover |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2022-01-22 |
|
| 603-550
| 5 |
Dover |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-01-22 |
|
| 603-550
| 6 |
Dover |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2022-02-21 |
|
| 603-550
| 7 |
Dover |
NH |
|
073H TELNYX LLC |
122 |
|
2022-04-03 |
|
| 603-550
| 8 |
Dover |
NH |
|
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
2022-02-14 |
|
| 603-550
| 9 |
Dover |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2022-01-21 |
|
| 603-551
| A |
Manchester |
NH |
MNCHNHCODS2 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-552
| A |
Derry |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-552
| 0 |
Derry |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2011-04-14 |
|
| 603-552
| 1 |
Derry |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2001-09-24 |
|
| 603-552
| 2 |
Derry |
NH |
|
8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH |
122 |
|
2003-10-27 |
|
| 603-552
| 3 |
Derry |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2010-12-03 |
|
| 603-552
| 4 |
Derry |
NH |
|
9827 OTEL TELEKOM, INC. - NH |
122 |
|
2002-09-10 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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