Local Calling Guide
Area code/prefix search
Mason, MI
1 2 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 517-244
| A |
MASNMIMSRSA |
9323 MICHIGAN BELL TEL CO |
346 |
|
|
|
| 517-244
| 0 |
MASNMIMSRSA |
9323 MICHIGAN BELL TEL CO |
346 |
|
|
|
| 517-244
| 1 |
MASNMIMSRSA |
9323 MICHIGAN BELL TEL CO |
346 |
|
|
|
| 517-244
| 2 |
MASNMIMSRSA |
9323 MICHIGAN BELL TEL CO |
346 |
|
|
|
| 517-244
| 3 |
MASNMIMSRSA |
9323 MICHIGAN BELL TEL CO |
346 |
|
|
|
| 517-244
| 4 |
MASNMIMSRSA |
9323 MICHIGAN BELL TEL CO |
346 |
|
|
|
| 517-244
| 5 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2004-03-16 |
|
| 517-244
| 6 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2006-04-15 |
|
| 517-244
| 7 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2004-09-05 |
|
| 517-244
| 8 |
MASNMIMSRSA |
9323 MICHIGAN BELL TEL CO |
346 |
|
|
|
| 517-244
| 9 |
MASNMIMSRSA |
9323 MICHIGAN BELL TEL CO |
346 |
|
|
|
| 517-362
| A |
LNNGMIMNXSZ |
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
346 |
|
2024-04-06 |
|
| 517-362
| 0 |
LNNGMIMN08Z |
991E BANDWIDTH.COM CLEC, LLC - MI |
346 |
|
2024-10-31 |
|
| 517-362
| 1 |
|
6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI |
346 |
|
2025-01-15 |
|
| 517-362
| 7 |
LNNGMIMNXSZ |
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
346 |
|
2024-04-06 |
|
| 517-362
| 8 |
LNNGMIMNXSZ |
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
346 |
|
2024-04-06 |
|
| 517-362
| 9 |
LNNGMIMNXSZ |
2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
346 |
|
2024-04-06 |
|
| 517-525
| A |
LNNGMIXIAMD |
6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI |
346 |
|
|
|
| 517-604
| A |
LNNGMIXIAMD |
6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI |
346 |
|
|
|
| 517-604
| 0 |
LNNGMIXIAMD |
6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI |
346 |
|
|
|
| 517-604
| 1 |
LNNGMIXIAMD |
6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI |
346 |
|
|
|
| 517-604
| 2 |
LNNGMIMNX8Z |
770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI |
346 |
|
2019-05-17 |
|
| 517-604
| 3 |
LNNGMIXIAMD |
6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI |
346 |
|
2019-01-17 |
|
| 517-604
| 4 |
LNNGMIMNX5Z |
543C ONVOY, LLCV - MI |
346 |
|
2016-03-28 |
|
| 517-604
| 5 |
LNNGMIMNX5Z |
543C ONVOY, LLCV - MI |
346 |
|
2016-03-28 |
|
| 517-604
| 6 |
LNNGMIMN15Z |
961J WOW! INTERNET, CABLE AND PHONE |
346 |
|
2012-05-20 |
|
| 517-604
| 7 |
LNNGMIMNXQZ |
508J CENTURYLINK COMMUNICATIONS, LLC |
346 |
|
2016-01-26 |
|
| 517-604
| 8 |
LNNGMIXIAMD |
6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI |
346 |
|
2019-01-17 |
|
| 517-604
| 9 |
LNNGMIMNX4Z |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
346 |
|
2016-09-26 |
|
| 517-676
| A |
MASNMIMSRSA |
9323 MICHIGAN BELL TEL CO |
346 |
|
|
|
| 517-722
| A |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
|
|
| 517-722
| 0 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2017-12-08 |
|
| 517-722
| 1 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2017-12-08 |
|
| 517-722
| 2 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2017-12-08 |
|
| 517-722
| 3 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2017-12-08 |
|
| 517-722
| 4 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2017-12-08 |
|
| 517-722
| 5 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2017-12-08 |
|
| 517-722
| 6 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2017-12-08 |
|
| 517-722
| 7 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2017-12-08 |
|
| 517-722
| 8 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2017-12-08 |
|
| 517-722
| 9 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2017-12-08 |
|
| 517-833
| A |
LNNGMIVE2MD |
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
346 |
|
|
|
| 517-833
| 0 |
LNNGMIMNX4Z |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
346 |
|
2004-12-31 |
|
| 517-833
| 1 |
|
817J TELNET WORLDWIDE, INC. |
346 |
|
2005-09-03 |
|
| 517-833
| 2 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2005-09-15 |
|
| 517-833
| 3 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2005-09-26 |
|
| 517-833
| 4 |
LNNGMIVE2MD |
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
346 |
|
2004-12-20 |
|
| 517-833
| 5 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2005-05-18 |
|
| 517-833
| 6 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2005-05-18 |
|
| 517-833
| 7 |
LNNGMIXIDS0 |
7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI |
346 |
|
2005-04-02 |
|
1 2 >>
Last updated: Tue, 31 Mar 2026 13:56:49 UTC
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