Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Bay City, MI

1 2 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
989-225 A SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344      
989-316 A BYCYMIWSDS0  9323 MICHIGAN BELL TEL CO 344      
989-316 1   792K CHARTER IP ENABLED SERVICES, LLC 344   2008-03-24   
989-316 2   792K CHARTER IP ENABLED SERVICES, LLC 344   2008-08-21   
989-316 3 SGNWMIFAXWY  624H ONVOY SPECTRUM, LLC 344   2024-08-11   
989-316 4 BYCYMIWSDS0  9323 MICHIGAN BELL TEL CO 344   2007-09-05   
989-316 5 SGNWMIFAXFY  5562 METROPCS, INC. 344   2008-09-08   
989-316 6 SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2008-08-01   
989-316 7 SGNWMIFAXNX  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 344   2008-01-19   
989-316 8 SGNWMIFAXFY  5562 METROPCS, INC. 344   2008-09-08   
989-316 9 SGNWMIFAXFY  5562 METROPCS, INC. 344   2008-09-08   
989-318 A SGNWMIFAY0X  425J CSC WIRELESS, LLC 344      
989-318 0 SGNWMIAC6MD  939H COMMIO, LLC 344   2022-09-26   
989-318 1 SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2022-12-16   
989-318 2 SGNWMIFAY0X  425J CSC WIRELESS, LLC 344   2020-08-24   
989-318 3 SGNWMIFAXJX  991E BANDWIDTH.COM CLEC, LLC - MI 344   2020-11-13   
989-318 4 SGNWMIFAXJX  991E BANDWIDTH.COM CLEC, LLC - MI 344   2020-11-13   
989-318 5 SGNWMIFAXJX  991E BANDWIDTH.COM CLEC, LLC - MI 344   2020-11-13   
989-318 6 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2020-11-14   
989-318 7 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2020-11-14   
989-318 8 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2023-08-26   
989-318 9 SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2021-04-30   
989-322 A SGNWMIFAZMD  2550 123.NET, LLC 344      
989-357 A SGNWMIACFMD  321J HD CARRIER LLC 344      
989-357 0 SGNWMIAC6MD  939H COMMIO, LLC 344   2021-07-24   
989-357 1 SGNWMIAC6MD  939H COMMIO, LLC 344   2021-07-24   
989-357 2 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2023-07-08   
989-357 3 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2023-07-08   
989-357 4 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2024-10-01   
989-357 7 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2022-12-15   
989-357 8 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2022-12-15   
989-357 9 SGNWMIACFMD  321J HD CARRIER LLC 344   2020-11-21   
989-391 A SGNWMIACNMD  732J NUSO, LLC 344      
989-391 0 SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2006-12-07   
989-391 1 SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2006-12-07   
989-391 3 SGNWMIFAX5X  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 344   2007-06-30   
989-391 4 SGNWMIATX0X  516C AT&T CORP. 344   2007-03-20   
989-391 5 SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2006-12-17   
989-391 6 SGNWMIACNMD  732J NUSO, LLC 344   2023-03-05   
989-391 7 SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2006-12-17   
989-391 8   145J TERRA NOVA TELECOM INC. 344   2021-12-02   
989-391 9   792K CHARTER IP ENABLED SERVICES, LLC 344   2007-02-26   
989-402 A SGNWMIFAXKX  543C ONVOY, LLCV - MI 344      
989-402 0 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2009-03-23   
989-402 1   792K CHARTER IP ENABLED SERVICES, LLC 344   2010-02-21   
989-402 2 SGNWMIFAXJX  991E BANDWIDTH.COM CLEC, LLC - MI 344   2010-04-19   
989-402 3 SGNWMIFAXJX  991E BANDWIDTH.COM CLEC, LLC - MI 344   2010-09-11   
989-402 4 SGNWMIFAXJX  991E BANDWIDTH.COM CLEC, LLC - MI 344   2010-10-28   
989-402 5 SGNWMIFAXJX  991E BANDWIDTH.COM CLEC, LLC - MI 344   2011-07-09   
989-402 7 SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2011-02-06   
989-402 8 SGNWMIFAXFY  5562 METROPCS, INC. 344   2012-02-15   
989-402 9 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2012-02-22   
989-414 A SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344      
989-414 0 SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2007-08-26   
989-414 1 SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2005-01-30   
989-414 2 SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2005-09-10   
989-414 3 SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2005-09-10   
989-414 4 SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344      
989-414 5 SGNWMIFAXEX  829J PAETEC ITEL, LLC 344   2005-04-18   
989-414 6 SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2005-09-10   
989-414 7 SGNWMIFAXFY  5562 METROPCS, INC. 344   2008-09-08   
989-414 8 SGNWMIFAXEX  829J PAETEC ITEL, LLC 344   2005-09-23   
989-414 9 SGNWMIFAXFY  5562 METROPCS, INC. 344   2008-09-08   
989-415 A SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344      
989-439 A SGNWMIFAXLY  279B CLEAR RATE COMMUNICATIONS, INC. - MI 344      
989-439 0 SGNWMIFAXJX  991E BANDWIDTH.COM CLEC, LLC - MI 344   2014-09-19   
989-439 1   792K CHARTER IP ENABLED SERVICES, LLC 344   2012-10-14   
989-439 2 SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2013-03-18   
989-439 3 SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2013-03-18   
989-439 4 SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2013-03-18   
989-439 5 SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2013-06-25   
989-439 6 SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2013-07-01   
989-439 7 SGNWMIFAXLY  279B CLEAR RATE COMMUNICATIONS, INC. - MI 344   2012-06-23   
989-439 8 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2016-01-15   
989-439 9 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2013-03-15   
989-450 A SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344      
989-459 A SGNWMIACDS1  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 344      
989-459 0 SGNWMIACDS1  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 344   2014-05-08   
989-459 1 SGNWMIFAXJX  991E BANDWIDTH.COM CLEC, LLC - MI 344   2016-07-21   
989-459 2 SGNWMIACDS1  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 344   2014-05-08   
989-459 3 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2017-07-13   
989-459 4 SGNWMIFAXNX  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 344   2017-04-07   
989-459 5 SGNWMIFAXJX  991E BANDWIDTH.COM CLEC, LLC - MI 344   2018-04-07   
989-459 6 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2024-10-01   
989-459 7 SGNWMIFAXCY  508J CENTURYLINK COMMUNICATIONS, LLC 344   2016-02-25   
989-459 8 SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2023-12-15   
989-459 9 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2024-10-01   
989-460 A SGNWMIFAXEX  829J PAETEC ITEL, LLC 344      
989-460 0 SGNWMIFAXEX  829J PAETEC ITEL, LLC 344      
989-460 1 SGNWMIFAXEX  829J PAETEC ITEL, LLC 344      
989-460 2 SGNWMIFAXEX  829J PAETEC ITEL, LLC 344      
989-460 3 SGNWMIFAXEX  829J PAETEC ITEL, LLC 344      
989-460 4 SGNWMIFAXEX  829J PAETEC ITEL, LLC 344      
989-460 5 SGNWMIFAXEX  829J PAETEC ITEL, LLC 344      
989-460 6 SGNWMIFAXEX  829J PAETEC ITEL, LLC 344      
989-460 7 SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2011-02-24   
989-460 8 SGNWMIFAXJX  991E BANDWIDTH.COM CLEC, LLC - MI 344   2012-07-16   
989-460 9 SGNWMIFAXEX  829J PAETEC ITEL, LLC 344      
989-509 A   817J INTERACTIVE SERVICES NETWORK, INC. 344      
989-531 A SGNWMIACPMD  616J LEAP TELECOM, LLC 344   2024-12-15   

1 2 >>

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.