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 |
| 603-802
| 1 |
Concord |
NH |
|
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
2022-11-14 |
|
| 603-802
| 2 |
Concord |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-11-13 |
|
| 603-802
| 3 |
Concord |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-11-13 |
|
| 603-802
| 4 |
Concord |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-12-01 |
|
| 603-802
| 5 |
Concord |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-12-01 |
|
| 603-802
| 6 |
Concord |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-12-01 |
|
| 603-802
| 7 |
Concord |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2023-07-06 |
|
| 603-802
| 8 |
Concord |
NH |
|
073H TELNYX LLC |
122 |
|
2022-11-20 |
|
| 603-802
| 9 |
Concord |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2023-02-10 |
|
| 603-803
| A |
Keene |
NH |
MNCHNHCO16Z |
508J CENTURYLINK COMMUNICATIONS, LLC |
122 |
|
|
|
| 603-803
| 0 |
Keene |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2021-12-31 |
|
| 603-803
| 1 |
Keene |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2017-08-24 |
|
| 603-803
| 2 |
Keene |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2018-11-15 |
|
| 603-803
| 3 |
Keene |
NH |
|
996E BANDWIDTH.COM CLEC, LLC - NH |
122 |
|
2019-09-02 |
|
| 603-803
| 4 |
Keene |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-09-29 |
|
| 603-803
| 5 |
Keene |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2021-08-02 |
|
| 603-803
| 6 |
Keene |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2022-09-29 |
|
| 603-803
| 7 |
Keene |
NH |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
122 |
|
2016-12-17 |
|
| 603-803
| 8 |
Keene |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2020-05-02 |
|
| 603-803
| 9 |
Keene |
NH |
|
996E BANDWIDTH.COM CLEC, LLC - NH |
122 |
|
2022-08-14 |
|
| 603-804
| A |
Dover |
NH |
MNCHNHBO2MD |
490J DISH WIRELESS, LLC |
122 |
|
|
|
| 603-804
| 0 |
Dover |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2023-10-23 |
|
| 603-804
| 2 |
Dover |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2025-11-27 |
|
| 603-804
| 4 |
Dover |
NH |
|
637E ONVOY, LLC - NH |
122 |
|
2024-06-07 |
|
| 603-804
| 8 |
Dover |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2024-11-22 |
|
| 603-804
| 9 |
Dover |
NH |
|
490J DISH WIRELESS, LLC |
122 |
|
2023-10-22 |
|
| 603-805
| A |
Concord |
NH |
MNCHNHACDS0 |
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
|
|
| 603-805
| 0 |
Concord |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2023-12-02 |
|
| 603-805
| 1 |
Concord |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2023-12-02 |
|
| 603-805
| 2 |
Concord |
NH |
|
7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH |
122 |
|
2023-12-01 |
|
| 603-805
| 3 |
Concord |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2026-02-12 |
|
| 603-805
| 4 |
Concord |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2024-10-04 |
|
| 603-805
| 7 |
Concord |
NH |
|
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
2024-11-03 |
|
| 603-805
| 8 |
Concord |
NH |
|
6889 OMNIPOINT MIAMI E LICENSE, LLC |
122 |
|
2023-12-02 |
|
| 603-805
| 9 |
Concord |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2024-03-08 |
|
| 603-808
| A |
Antrim |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
|
|
| 603-808
| 0 |
Antrim |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2010-02-10 |
|
| 603-808
| 1 |
Antrim |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2020-04-13 |
|
| 603-808
| 2 |
Antrim |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2020-04-13 |
|
| 603-808
| 8 |
Antrim |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2025-07-11 |
|
| 603-809
| A |
Nashua |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
|
|
| 603-809
| 0 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2007-05-06 |
|
| 603-809
| 1 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2007-05-08 |
|
| 603-809
| 2 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2007-07-02 |
|
| 603-809
| 3 |
Nashua |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2008-01-06 |
|
| 603-809
| 4 |
Nashua |
NH |
|
318J COMCAST IP PHONE, LLC |
122 |
|
2007-12-05 |
|
| 603-809
| 5 |
Nashua |
NH |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2008-01-06 |
|
| 603-809
| 6 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-03-03 |
|
| 603-809
| 7 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-05-02 |
|
| 603-809
| 8 |
Nashua |
NH |
|
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2008-09-01 |
|
<< 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.