Local Calling Guide
Area code/prefix search
NPA: 231
[Rate centres in NPA 231]
[Dial plan for NPA 231]
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| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 231-571
| 4 |
Muskegon |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
2009-01-19 |
|
| 231-571
| 5 |
Muskegon |
MI |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
348 |
|
2005-04-02 |
|
| 231-571
| 6 |
Muskegon |
MI |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
348 |
|
2005-04-02 |
|
| 231-571
| 7 |
Muskegon |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
2007-11-29 |
|
| 231-571
| 8 |
Muskegon |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
2007-11-29 |
|
| 231-571
| 9 |
Muskegon |
MI |
|
0695 FRONTIER NORTH, INC. - MI |
348 |
|
|
|
| 231-577
| A |
Cadillac |
MI |
GDRPMIQLX5Y |
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
348 |
|
|
|
| 231-577
| 0 |
Cadillac |
MI |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
348 |
|
2020-09-28 |
|
| 231-577
| 1 |
Cadillac |
MI |
|
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
348 |
|
2005-06-13 |
|
| 231-577
| 2 |
Cadillac |
MI |
|
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
348 |
|
2007-06-16 |
|
| 231-577
| 3 |
Cadillac |
MI |
|
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
348 |
|
2006-07-30 |
|
| 231-577
| 4 |
Cadillac |
MI |
|
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
348 |
|
|
|
| 231-577
| 5 |
Cadillac |
MI |
|
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
348 |
|
2005-09-03 |
|
| 231-577
| 6 |
Cadillac |
MI |
|
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2010-11-04 |
|
| 231-577
| 7 |
Cadillac |
MI |
|
829J PAETEC ITEL, LLC |
348 |
|
2004-02-02 |
|
| 231-577
| 8 |
Cadillac |
MI |
|
6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI |
348 |
|
2011-05-14 |
|
| 231-577
| 9 |
Cadillac |
MI |
|
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2011-06-12 |
|
| 231-578
| A |
Muskegon |
MI |
GDRPMIBL31Z |
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-578
| 0 |
Muskegon |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-578
| 1 |
Muskegon |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-578
| 2 |
Muskegon |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-578
| 3 |
Muskegon |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-578
| 4 |
Muskegon |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-578
| 5 |
Muskegon |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-578
| 6 |
Muskegon |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-578
| 7 |
Muskegon |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-578
| 8 |
Muskegon |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-578
| 9 |
Muskegon |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-580
| A |
Big Rapids |
MI |
GDRPMIBL31Z |
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-580
| 0 |
Big Rapids |
MI |
|
829J PAETEC ITEL, LLC |
348 |
|
2003-11-25 |
|
| 231-580
| 1 |
Big Rapids |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-580
| 3 |
Big Rapids |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-580
| 4 |
Big Rapids |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
2011-01-28 |
|
| 231-580
| 5 |
Big Rapids |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
2010-04-17 |
|
| 231-580
| 6 |
Big Rapids |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-580
| 7 |
Big Rapids |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
2011-04-10 |
|
| 231-580
| 8 |
Big Rapids |
MI |
|
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2010-07-02 |
|
| 231-580
| 9 |
Big Rapids |
MI |
|
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
348 |
|
|
|
| 231-581
| A |
Alba |
MI |
|
792K CHARTER IP ENABLED SERVICES, LLC |
348 |
|
|
|
| 231-581
| 0 |
Alba |
MI |
|
792K CHARTER IP ENABLED SERVICES, LLC |
348 |
|
|
|
| 231-582
| A |
Boyne City |
MI |
BOCYMIBCDS0 |
9323 MICHIGAN BELL TEL CO |
348 |
|
|
|
| 231-583
| A |
Ludington |
MI |
GDRPMIBLX8Z |
2550 123.NET, LLC |
348 |
|
|
|
| 231-583
| 0 |
Ludington |
MI |
|
2550 123.NET, LLC |
348 |
|
|
|
| 231-583
| 1 |
Ludington |
MI |
|
2550 123.NET, LLC |
348 |
|
|
|
| 231-584
| A |
Alba |
MI |
LKNRMIXJDS1 |
0721 PIGEON TEL. CO. |
348 |
|
|
|
| 231-585
| A |
Lakes of the North |
MI |
LKNRMIXJDS1 |
0721 PIGEON TEL. CO. |
348 |
|
|
|
| 231-587
| A |
Mancelona |
MI |
MNCLMIMNRSA |
9323 MICHIGAN BELL TEL CO |
348 |
|
|
|
| 231-587
| 0 |
Mancelona |
MI |
|
9323 MICHIGAN BELL TEL CO |
348 |
|
|
|
| 231-587
| 1 |
Mancelona |
MI |
|
9323 MICHIGAN BELL TEL CO |
348 |
|
|
|
| 231-587
| 2 |
Mancelona |
MI |
|
9323 MICHIGAN BELL TEL CO |
348 |
|
|
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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