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 |
| 231-304
| 2 |
Brutus |
MI |
|
792K CHARTER IP ENABLED SERVICES, LLC |
348 |
|
2025-05-25 |
|
| 231-304
| 3 |
Brutus |
MI |
GDRPMIBL36Z |
624H ONVOY SPECTRUM, LLC |
348 |
|
2021-06-18 |
|
| 231-304
| 4 |
Brutus |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2020-12-26 |
|
| 231-304
| 5 |
Brutus |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2020-12-26 |
|
| 231-304
| 8 |
Brutus |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2022-03-04 |
|
| 231-304
| 9 |
Brutus |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2023-08-12 |
|
| 231-305
| A |
Big Rapids |
MI |
|
817J INTERACTIVE SERVICES NETWORK, INC. |
348 |
|
|
|
| 231-306
| A |
Cadillac |
MI |
|
817J INTERACTIVE SERVICES NETWORK, INC. |
348 |
|
|
|
| 231-307
| A |
Morley |
MI |
WYNGMIKAGT2 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
348 |
|
|
|
| 231-307
| 0 |
Morley |
MI |
WYNGMIKAGT2 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
348 |
|
|
|
| 231-307
| 1 |
Morley |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2013-01-04 |
|
| 231-307
| 2 |
Morley |
MI |
GDRPMIBLXTZ |
3535 ACD TELECOM, INC. - MI |
348 |
|
2005-02-17 |
|
| 231-307
| 3 |
Morley |
MI |
|
792K CHARTER IP ENABLED SERVICES, LLC |
348 |
|
2007-02-25 |
|
| 231-307
| 4 |
Morley |
MI |
GDRPMIBL00Z |
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2014-09-20 |
|
| 231-307
| 5 |
Morley |
MI |
GDRPMIQLX5Y |
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
348 |
|
2008-05-08 |
|
| 231-307
| 6 |
Morley |
MI |
GDRPMIBL00Z |
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2018-06-02 |
|
| 231-307
| 7 |
Morley |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2013-03-18 |
|
| 231-307
| 8 |
Morley |
MI |
GDRPMIQLX5Y |
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
348 |
|
2008-05-08 |
|
| 231-307
| 9 |
Morley |
MI |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
348 |
|
2025-04-21 |
|
| 231-308
| A |
Charlevoix |
MI |
|
817J INTERACTIVE SERVICES NETWORK, INC. |
348 |
|
|
|
| 231-309
| A |
Manistee |
MI |
|
817J INTERACTIVE SERVICES NETWORK, INC. |
348 |
|
|
|
| 231-310
| A |
Falmouth |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
|
|
| 231-310
| 0 |
Falmouth |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2020-09-12 |
|
| 231-310
| 1 |
Falmouth |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2020-09-12 |
|
| 231-310
| 2 |
Falmouth |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2020-05-09 |
|
| 231-310
| 3 |
Falmouth |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2020-05-09 |
|
| 231-310
| 4 |
Falmouth |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2020-05-09 |
|
| 231-310
| 5 |
Falmouth |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2018-11-24 |
|
| 231-310
| 6 |
Falmouth |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2020-05-09 |
|
| 231-310
| 7 |
Falmouth |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2021-03-06 |
|
| 231-310
| 8 |
Falmouth |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2021-03-06 |
|
| 231-310
| 9 |
Falmouth |
MI |
GDRPMIBL36Z |
624H ONVOY SPECTRUM, LLC |
348 |
|
2021-06-19 |
|
| 231-312
| A |
Frankfort |
MI |
|
817J INTERACTIVE SERVICES NETWORK, INC. |
348 |
|
|
|
| 231-313
| A |
Traverse City |
MI |
WYNGMIKAGT2 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
348 |
|
|
|
| 231-314
| A |
Kalkaska |
MI |
|
817J INTERACTIVE SERVICES NETWORK, INC. |
348 |
|
|
|
| 231-315
| A |
Muskegon |
MI |
GDRPMIBL44Z |
6630 USA MOBILITY WIRELESS, INC. |
348 |
|
|
|
| 231-316
| A |
Ludington |
MI |
|
817J INTERACTIVE SERVICES NETWORK, INC. |
348 |
|
|
|
| 231-317
| A |
Boyne City |
MI |
GDRPMIBL44Z |
6630 USA MOBILITY WIRELESS, INC. |
348 |
|
|
|
| 231-318
| A |
Traverse City |
MI |
GDRPMIBL44Z |
6630 USA MOBILITY WIRELESS, INC. |
348 |
|
|
|
| 231-319
| A |
Mackinaw City |
MI |
|
817J INTERACTIVE SERVICES NETWORK, INC. |
348 |
|
|
|
| 231-320
| A |
Torch River Bridge |
MI |
GDRPMIBL00Z |
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
|
|
| 231-320
| 0 |
Torch River Bridge |
MI |
GDRPMIBL00Z |
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2021-11-04 |
|
| 231-320
| 1 |
Torch River Bridge |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2023-08-06 |
|
| 231-320
| 2 |
Torch River Bridge |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2022-03-04 |
|
| 231-320
| 4 |
Torch River Bridge |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2023-01-04 |
|
| 231-320
| 5 |
Torch River Bridge |
MI |
|
145J TERRA NOVA TELECOM INC. |
348 |
|
2025-07-12 |
|
| 231-320
| 8 |
Torch River Bridge |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2023-09-28 |
|
| 231-320
| 9 |
Torch River Bridge |
MI |
GDRPMIBL36Z |
624H ONVOY SPECTRUM, LLC |
348 |
|
2024-05-25 |
|
| 231-321
| A |
Elmira |
MI |
GDRQMIBODMD |
6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI |
348 |
|
|
|
| 231-321
| 0 |
Elmira |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2023-08-06 |
|
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Last updated: Thu, 05 Feb 2026 23:41:55 UTC
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