Local Calling Guide
Area code/prefix search
NPA: 231
[Rate centres in NPA 231]
[Dial plan for NPA 231]
<< 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 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 231-968
| A |
Cadillac |
MI |
GDRPMIBL00Z |
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
|
|
| 231-968
| 0 |
Cadillac |
MI |
|
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2021-11-18 |
|
| 231-968
| 1 |
Cadillac |
MI |
|
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2021-11-18 |
|
| 231-968
| 2 |
Cadillac |
MI |
|
145J TERRA NOVA TELECOM INC. |
348 |
|
2024-05-27 |
|
| 231-968
| 3 |
Cadillac |
MI |
|
5562 METROPCS, INC. |
348 |
|
2021-11-19 |
|
| 231-968
| 4 |
Cadillac |
MI |
|
6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI |
348 |
|
2025-04-24 |
|
| 231-968
| 8 |
Cadillac |
MI |
|
5562 METROPCS, INC. |
348 |
|
2021-11-19 |
|
| 231-970
| A |
Bear Lake |
MI |
WYNGMIKAGT2 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
348 |
|
|
|
| 231-970
| 0 |
Bear Lake |
MI |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
348 |
|
|
|
| 231-970
| 1 |
Bear Lake |
MI |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
348 |
|
2009-01-26 |
|
| 231-970
| 2 |
Bear Lake |
MI |
|
792K CHARTER IP ENABLED SERVICES, LLC |
348 |
|
2012-10-05 |
|
| 231-970
| 3 |
Bear Lake |
MI |
|
543C ONVOY, LLCV - MI |
348 |
|
2021-03-27 |
|
| 231-970
| 4 |
Bear Lake |
MI |
|
3535 ACD TELECOM, INC. - MI |
348 |
|
2004-10-23 |
|
| 231-970
| 5 |
Bear Lake |
MI |
|
543C ONVOY, LLCV - MI |
348 |
|
2019-09-05 |
|
| 231-970
| 6 |
Bear Lake |
MI |
|
624H ONVOY SPECTRUM, LLC |
348 |
|
2021-06-18 |
|
| 231-970
| 7 |
Bear Lake |
MI |
|
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
348 |
|
2017-06-21 |
|
| 231-970
| 8 |
Bear Lake |
MI |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
348 |
|
2016-08-28 |
|
| 231-970
| 9 |
Bear Lake |
MI |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
348 |
|
2010-09-06 |
|
| 231-972
| A |
Mecosta |
MI |
MCSTMIXIDS0 |
0671 BRIGHTSPEED OF CENTRAL MICHIGAN, INC |
348 |
|
|
|
| 231-974
| A |
Grant |
MI |
GDRPMIBLX8Z |
2550 123.NET, LLC |
348 |
|
|
|
| 231-974
| 0 |
Grant |
MI |
|
2550 123.NET, LLC |
348 |
|
|
|
| 231-974
| 1 |
Grant |
MI |
|
515J IP HORIZON LLC |
348 |
|
2021-12-31 |
|
| 231-974
| 2 |
Grant |
MI |
|
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2022-09-23 |
|
| 231-974
| 3 |
Grant |
MI |
|
543C ONVOY, LLCV - MI |
348 |
|
2021-03-06 |
|
| 231-974
| 4 |
Grant |
MI |
|
543C ONVOY, LLCV - MI |
348 |
|
2021-03-06 |
|
| 231-974
| 6 |
Grant |
MI |
|
624H ONVOY SPECTRUM, LLC |
348 |
|
2021-06-19 |
|
| 231-977
| A |
Mackinaw City |
MI |
BRSPMI095MD |
965H FRACTEL, LLC |
348 |
|
|
|
| 231-977
| 0 |
Mackinaw City |
MI |
|
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2021-09-11 |
|
| 231-977
| 2 |
Mackinaw City |
MI |
|
543C ONVOY, LLCV - MI |
348 |
|
2021-05-10 |
|
| 231-977
| 5 |
Mackinaw City |
MI |
|
624H ONVOY SPECTRUM, LLC |
348 |
|
2021-06-19 |
|
| 231-977
| 7 |
Mackinaw City |
MI |
|
965H FRACTEL, LLC |
348 |
|
2020-04-13 |
|
| 231-977
| 8 |
Mackinaw City |
MI |
|
543C ONVOY, LLCV - MI |
348 |
|
2021-03-27 |
|
| 231-977
| 9 |
Mackinaw City |
MI |
|
933G PEERLESS NETWORK OF MICHIGAN, LLC - MI |
348 |
|
2023-10-28 |
|
| 231-981
| A |
Whitehall |
MI |
WHTHMIXGDS0 |
0695 FRONTIER NORTH, INC. - MI |
348 |
|
|
|
| 231-981
| 0 |
Whitehall |
MI |
|
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
348 |
|
2004-11-14 |
|
| 231-981
| 1 |
Whitehall |
MI |
|
3535 ACD TELECOM, INC. - MI |
348 |
|
2005-02-18 |
|
| 231-981
| 2 |
Whitehall |
MI |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
348 |
|
2005-02-24 |
|
| 231-981
| 3 |
Whitehall |
MI |
|
0695 FRONTIER NORTH, INC. - MI |
348 |
|
|
|
| 231-981
| 4 |
Whitehall |
MI |
|
817J INTERACTIVE SERVICES NETWORK, INC. |
348 |
|
2005-09-02 |
|
| 231-981
| 5 |
Whitehall |
MI |
|
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
348 |
|
2006-01-05 |
|
| 231-981
| 6 |
Whitehall |
MI |
|
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
348 |
|
2006-12-11 |
|
| 231-981
| 7 |
Whitehall |
MI |
|
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
348 |
|
2006-12-11 |
|
| 231-981
| 8 |
Whitehall |
MI |
|
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2009-03-07 |
|
| 231-981
| 9 |
Whitehall |
MI |
|
318J COMCAST IP PHONE, LLC |
348 |
|
2008-12-26 |
|
| 231-994
| A |
Lake Leelanau |
MI |
GDRPMIBLXTZ |
3535 ACD TELECOM, INC. - MI |
348 |
|
|
|
| 231-994
| 0 |
Lake Leelanau |
MI |
|
817J INTERACTIVE SERVICES NETWORK, INC. |
348 |
|
2005-09-02 |
|
| 231-994
| 1 |
Lake Leelanau |
MI |
|
543C ONVOY, LLCV - MI |
348 |
|
2021-08-15 |
|
| 231-994
| 2 |
Lake Leelanau |
MI |
|
792K CHARTER IP ENABLED SERVICES, LLC |
348 |
|
2007-02-25 |
|
| 231-994
| 3 |
Lake Leelanau |
MI |
|
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2011-02-25 |
|
| 231-994
| 4 |
Lake Leelanau |
MI |
|
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2011-06-26 |
|
<< 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 >>
Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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