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 |
| 231-422
| 9 |
Pellston |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2022-03-04 |
|
| 231-423
| A |
Evart |
MI |
GDRPMIBL00Z |
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
|
|
| 231-424
| A |
Carr |
MI |
GDRPMIBLXTZ |
3535 ACD TELECOM, INC. - MI |
348 |
|
|
|
| 231-424
| 2 |
Carr |
MI |
|
145J TERRA NOVA TELECOM INC. |
348 |
|
2026-02-06 |
|
| 231-424
| 4 |
Carr |
MI |
|
145J TERRA NOVA TELECOM INC. |
348 |
|
2025-05-31 |
|
| 231-424
| 7 |
Carr |
MI |
GDRPMIBLXTZ |
3535 ACD TELECOM, INC. - MI |
348 |
|
2005-03-20 |
|
| 231-425
| A |
Ludington |
MI |
GDRPMIBL31Z |
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-425
| 0 |
Ludington |
MI |
GDRPMIBL31Z |
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-425
| 1 |
Ludington |
MI |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
348 |
|
2025-09-26 |
|
| 231-425
| 2 |
Ludington |
MI |
GDRPMIBLXTZ |
3535 ACD TELECOM, INC. - MI |
348 |
|
2005-02-11 |
|
| 231-425
| 3 |
Ludington |
MI |
|
792K CHARTER IP ENABLED SERVICES, LLC |
348 |
|
2007-02-25 |
|
| 231-425
| 4 |
Ludington |
MI |
|
792K CHARTER IP ENABLED SERVICES, LLC |
348 |
|
2008-09-04 |
|
| 231-425
| 5 |
Ludington |
MI |
MSKGMIXKFMD |
691A DAYSTARR, LLC DBA DAYSTARR COMMUNICATIONS - MI |
348 |
|
2007-04-30 |
|
| 231-425
| 6 |
Ludington |
MI |
GDRPMIBL31Z |
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-425
| 7 |
Ludington |
MI |
GDRPMIBL31Z |
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-425
| 8 |
Ludington |
MI |
GDRPMIBL31Z |
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-425
| 9 |
Ludington |
MI |
|
792K CHARTER IP ENABLED SERVICES, LLC |
348 |
|
2015-06-13 |
|
| 231-426
| A |
Ravenna |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
|
|
| 231-426
| 2 |
Ravenna |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2023-09-10 |
|
| 231-427
| A |
Mackinaw City |
MI |
GDRPMIBL15Z |
516C AT&T CORP. |
348 |
|
|
|
| 231-427
| 0 |
Mackinaw City |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2013-01-03 |
|
| 231-427
| 1 |
Mackinaw City |
MI |
TRCYMIMNVMD |
116F PENINSULA FIBER NETWORK, LLC - MI |
348 |
|
2015-06-18 |
|
| 231-427
| 2 |
Mackinaw City |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2012-06-01 |
|
| 231-427
| 3 |
Mackinaw City |
MI |
GDRPMIBL06Z |
770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI |
348 |
|
2016-10-10 |
|
| 231-427
| 4 |
Mackinaw City |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2013-03-18 |
|
| 231-427
| 5 |
Mackinaw City |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2016-03-23 |
|
| 231-427
| 6 |
Mackinaw City |
MI |
TRCYMIMNWMD |
508J CENTURYLINK COMMUNICATIONS, LLC |
348 |
|
2015-09-15 |
|
| 231-427
| 7 |
Mackinaw City |
MI |
GDRPMIBL15Z |
516C AT&T CORP. |
348 |
|
2011-10-01 |
|
| 231-427
| 8 |
Mackinaw City |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2016-03-23 |
|
| 231-427
| 9 |
Mackinaw City |
MI |
BRSPMI09DS0 |
933G PEERLESS NETWORK OF MICHIGAN, LLC - MI |
348 |
|
2015-12-24 |
|
| 231-428
| A |
Muskegon |
MI |
MSKGMIXKX1X |
543C ONVOY, LLCV - MI |
348 |
|
|
|
| 231-428
| 0 |
Muskegon |
MI |
WYNGMIKAGT2 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
348 |
|
2023-10-01 |
|
| 231-428
| 1 |
Muskegon |
MI |
GDRQMIBODMD |
6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI |
348 |
|
2023-12-15 |
|
| 231-428
| 2 |
Muskegon |
MI |
MSKGMIXKX1X |
543C ONVOY, LLCV - MI |
348 |
|
2023-09-16 |
|
| 231-428
| 3 |
Muskegon |
MI |
MSKGMIXKX1X |
543C ONVOY, LLCV - MI |
348 |
|
2023-09-16 |
|
| 231-428
| 4 |
Muskegon |
MI |
MSKGMIXKX1X |
543C ONVOY, LLCV - MI |
348 |
|
2023-09-16 |
|
| 231-428
| 5 |
Muskegon |
MI |
|
490J BOOST SUBSCRIBERCO L.L.C. |
348 |
|
2025-03-14 |
|
| 231-428
| 6 |
Muskegon |
MI |
|
490J BOOST SUBSCRIBERCO L.L.C. |
348 |
|
2025-08-10 |
|
| 231-428
| 8 |
Muskegon |
MI |
|
6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI |
348 |
|
2025-05-07 |
|
| 231-428
| 9 |
Muskegon |
MI |
|
6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI |
348 |
|
2025-10-13 |
|
| 231-429
| A |
Cadillac |
MI |
GDRQMIBODMD |
6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI |
348 |
|
|
|
| 231-430
| A |
Boyne City |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
|
|
| 231-430
| 0 |
Boyne City |
MI |
GDRPMIBL36Z |
624H ONVOY SPECTRUM, LLC |
348 |
|
2024-05-18 |
|
| 231-430
| 1 |
Boyne City |
MI |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
348 |
|
2025-06-30 |
|
| 231-430
| 2 |
Boyne City |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2023-09-16 |
|
| 231-431
| A |
Clam River |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2024-12-09 |
|
| 231-431
| 0 |
Clam River |
MI |
GDRPMIBL00Z |
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2021-08-23 |
|
| 231-431
| 1 |
Clam River |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2023-08-26 |
|
| 231-431
| 3 |
Clam River |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2021-07-24 |
|
| 231-431
| 4 |
Clam River |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2022-03-04 |
|
<< 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, 05 Feb 2026 23:41:55 UTC
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