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 |
| 603-619
| 6 |
Laconia |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2023-08-20 |
|
| 603-619
| 7 |
Laconia |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2023-03-31 |
|
| 603-619
| 8 |
Laconia |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2022-10-17 |
|
| 603-619
| 9 |
Laconia |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2023-07-06 |
|
| 603-620
| A |
Merrimack |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-621
| A |
Manchester |
NH |
MNCHNHCODS2 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-622
| A |
Manchester |
NH |
MNCHNHCODS2 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-623
| A |
Manchester |
NH |
MNCHNHCODS2 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-624
| A |
Manchester |
NH |
MNCHNHCODS2 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-625
| A |
Manchester |
NH |
MNCHNHCODS2 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-626
| A |
Manchester |
NH |
MNCHNHCODS2 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-627
| A |
Manchester |
NH |
MNCHNHCODS2 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-628
| A |
Manchester |
NH |
MNCHNHCODS2 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-629
| A |
Manchester |
NH |
MNCHNHCODS2 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-630
| A |
Laconia |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-630
| 0 |
Laconia |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-630
| 1 |
Laconia |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-630
| 2 |
Laconia |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-630
| 3 |
Laconia |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-630
| 4 |
Laconia |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2003-10-03 |
|
| 603-630
| 5 |
Laconia |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2004-05-02 |
|
| 603-630
| 6 |
Laconia |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2005-09-20 |
|
| 603-630
| 7 |
Laconia |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2006-07-03 |
|
| 603-630
| 8 |
Laconia |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2005-05-02 |
|
| 603-630
| 9 |
Laconia |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2006-12-02 |
|
| 603-631
| A |
Lancaster |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-631
| 0 |
Lancaster |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-631
| 1 |
Lancaster |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-631
| 2 |
Lancaster |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-631
| 3 |
Lancaster |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-631
| 4 |
Lancaster |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2011-04-01 |
|
| 603-631
| 5 |
Lancaster |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2009-03-16 |
|
| 603-631
| 6 |
Lancaster |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2012-07-15 |
|
| 603-631
| 7 |
Lancaster |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2014-08-01 |
|
| 603-631
| 9 |
Lancaster |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-632
| A |
Enfield |
NH |
ENFDNHNMRS1 |
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-632
| 0 |
Enfield |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2007-04-15 |
|
| 603-632
| 1 |
Enfield |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2006-10-30 |
|
| 603-632
| 2 |
Enfield |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2021-05-27 |
|
| 603-632
| 3 |
Enfield |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2004-09-04 |
|
| 603-632
| 4 |
Enfield |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-632
| 5 |
Enfield |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-632
| 6 |
Enfield |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2001-03-26 |
|
| 603-632
| 7 |
Enfield |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-632
| 8 |
Enfield |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2005-03-10 |
|
| 603-632
| 9 |
Enfield |
NH |
|
5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH |
122 |
|
|
|
| 603-633
| A |
Milford |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-633
| 0 |
Milford |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2022-06-20 |
|
| 603-633
| 1 |
Milford |
NH |
|
073H TELNYX LLC |
122 |
|
2022-10-06 |
|
| 603-633
| 2 |
Milford |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2023-04-06 |
|
<< 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
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