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 |
| 603-707
| 9 |
Meredith |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-02-06 |
|
| 603-708
| A |
Canterbury |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
|
|
| 603-708
| 0 |
Canterbury |
NH |
|
073H TELNYX LLC |
122 |
|
2024-07-22 |
|
| 603-708
| 1 |
Canterbury |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2005-04-11 |
|
| 603-708
| 2 |
Canterbury |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2015-05-30 |
|
| 603-708
| 3 |
Canterbury |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2023-03-10 |
|
| 603-708
| 9 |
Canterbury |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2026-02-05 |
|
| 603-709
| A |
Plainfield |
NH |
MNCHNHCOX8Z |
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
|
|
| 603-709
| 0 |
Plainfield |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2023-07-06 |
|
| 603-709
| 2 |
Plainfield |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-01-15 |
|
| 603-709
| 3 |
Plainfield |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2023-04-20 |
|
| 603-709
| 4 |
Plainfield |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2004-10-08 |
|
| 603-709
| 5 |
Plainfield |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-12-23 |
|
| 603-709
| 6 |
Plainfield |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2021-08-02 |
|
| 603-709
| 7 |
Plainfield |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2006-10-31 |
|
| 603-709
| 8 |
Plainfield |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2021-05-23 |
|
| 603-710
| A |
Washington |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
|
|
| 603-710
| 0 |
Washington |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2023-07-02 |
|
| 603-710
| 7 |
Washington |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2025-10-15 |
|
| 603-710
| 8 |
Washington |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2021-04-16 |
|
| 603-710
| 9 |
Washington |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2021-04-16 |
|
| 603-712
| A |
Pike |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-712
| 0 |
Pike |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2023-08-06 |
|
| 603-712
| 1 |
Pike |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2024-11-11 |
|
| 603-712
| 3 |
Pike |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2025-07-25 |
|
| 603-712
| 5 |
Pike |
NH |
|
4017 LEVEL 3 COMMUNICATIONS, LLC - NH |
122 |
|
2005-09-15 |
|
| 603-712
| 9 |
Pike |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-713
| A |
Nashua |
NH |
MNCHNHCOX9Z |
637E ONVOY, LLC - NH |
122 |
|
|
|
| 603-713
| 0 |
Nashua |
NH |
|
073H TELNYX LLC |
122 |
|
2022-11-14 |
|
| 603-713
| 1 |
Nashua |
NH |
|
073H TELNYX LLC |
122 |
|
2022-11-14 |
|
| 603-713
| 2 |
Nashua |
NH |
|
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
2022-11-14 |
|
| 603-713
| 3 |
Nashua |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-11-13 |
|
| 603-713
| 4 |
Nashua |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-11-13 |
|
| 603-713
| 5 |
Nashua |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-11-13 |
|
| 603-713
| 6 |
Nashua |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-12-01 |
|
| 603-713
| 7 |
Nashua |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-12-01 |
|
| 603-713
| 8 |
Nashua |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2023-07-11 |
|
| 603-713
| 9 |
Nashua |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-12-01 |
|
| 603-714
| A |
Bedford |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-714
| 0 |
Bedford |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-714
| 1 |
Bedford |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2007-05-03 |
|
| 603-714
| 2 |
Bedford |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-04-04 |
|
| 603-714
| 3 |
Bedford |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2009-04-02 |
|
| 603-714
| 4 |
Bedford |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-714
| 5 |
Bedford |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-714
| 6 |
Bedford |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2017-07-06 |
|
| 603-714
| 7 |
Bedford |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2015-05-01 |
|
| 603-714
| 8 |
Bedford |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-714
| 9 |
Bedford |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-715
| A |
Concord |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
|
|
<< 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: VoIP.ms
Like this site? We accept donations via PayPal.