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
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 231-981
| 1 |
Whitehall |
MI |
GDRPMIBLXTZ |
3535 ACD TELECOM, INC. - MI |
348 |
|
2005-02-18 |
|
| 231-981
| 2 |
Whitehall |
MI |
WYNGMIKAGT2 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
348 |
|
2005-02-24 |
|
| 231-981
| 3 |
Whitehall |
MI |
WHTHMIXGDS0 |
0695 FRONTIER NORTH, INC. - MI |
348 |
|
|
|
| 231-981
| 4 |
Whitehall |
MI |
GDRPMIBQ1MD |
4632 TELNET WORLDWIDE, INC. |
348 |
|
2005-09-02 |
|
| 231-981
| 5 |
Whitehall |
MI |
GDRPMIQLX5Y |
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
348 |
|
2006-01-05 |
|
| 231-981
| 6 |
Whitehall |
MI |
GDRPMIQLX5Y |
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
348 |
|
2006-12-11 |
|
| 231-981
| 7 |
Whitehall |
MI |
GDRPMIQLX5Y |
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
348 |
|
2006-12-11 |
|
| 231-981
| 8 |
Whitehall |
MI |
GDRPMIBL00Z |
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2009-03-07 |
|
| 231-981
| 9 |
Whitehall |
MI |
GDRPMIBL40Z |
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 |
GDRPMIBQ1MD |
4632 TELNET WORLDWIDE, INC. |
348 |
|
2005-09-02 |
|
| 231-994
| 1 |
Lake Leelanau |
MI |
GDRPMIBL04Z |
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 |
GDRPMIBL00Z |
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2011-02-25 |
|
| 231-994
| 4 |
Lake Leelanau |
MI |
GDRPMIBL00Z |
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2011-06-26 |
|
| 231-994
| 5 |
Lake Leelanau |
MI |
GDRPMIBL15Z |
516C AT&T CORP. |
348 |
|
2011-08-23 |
|
| 231-994
| 6 |
Lake Leelanau |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2012-06-01 |
|
| 231-994
| 7 |
Lake Leelanau |
MI |
GDRPMIBLXTZ |
3535 ACD TELECOM, INC. - MI |
348 |
|
2005-03-12 |
|
| 231-994
| 8 |
Lake Leelanau |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2013-01-03 |
|
| 231-994
| 9 |
Lake Leelanau |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2013-03-18 |
|
| 231-995
| A |
Traverse City |
MI |
TRCYMIMNDS1 |
9323 MICHIGAN BELL TEL CO |
348 |
|
|
|
| 231-999
| A |
Central Lake |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
|
|
| 231-999
| 1 |
Central Lake |
MI |
GDRPMIBL00Z |
991E BANDWIDTH.COM CLEC, LLC - MI |
348 |
|
2021-08-21 |
|
| 231-999
| 2 |
Central Lake |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2021-03-06 |
|
| 231-999
| 3 |
Central Lake |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2021-03-06 |
|
| 231-999
| 5 |
Central Lake |
MI |
GDRPMIBL36Z |
624H ONVOY SPECTRUM, LLC |
348 |
|
2021-06-18 |
|
| 231-999
| 7 |
Central Lake |
MI |
TRCYMIMNWMD |
508J CENTURYLINK COMMUNICATIONS, LLC |
348 |
|
2015-10-21 |
|
| 231-999
| 8 |
Central Lake |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2015-10-19 |
|
| 231-999
| 9 |
Central Lake |
MI |
GDRPMIBL04Z |
543C ONVOY, LLCV - MI |
348 |
|
2015-10-19 |
|
<< 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
Last updated: Sun, 01 Jun 2025 02:18:11 UTC
Sponsored by: ISP Telecom
Like this site? We accept donations via PayPal.