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.

Mount Pleasant, MI

1 2 3 4 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
989-289 A SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344      
989-317 A MNPLMICFDS1  0127 WINN TELEPHONE COMPANY DBA WINN TELECOM - MI 344      
989-317 0   792K CHARTER IP ENABLED SERVICES, LLC 344   2007-03-18   
989-317 2 SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2008-02-12   
989-317 3   792K CHARTER IP ENABLED SERVICES, LLC 344   2008-06-28   
989-317 4 MNPLMICFDS1  0127 WINN TELEPHONE COMPANY DBA WINN TELECOM - MI 344   2006-07-31   
989-317 5 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2011-02-15   
989-317 6 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2011-02-15   
989-317 7 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2011-09-27   
989-317 8   792K CHARTER IP ENABLED SERVICES, LLC 344   2012-05-31   
989-317 9 MNPLMICFDS1  0127 WINN TELEPHONE COMPANY DBA WINN TELECOM - MI 344   2006-07-31   
989-330 A SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344      
989-400 A SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2024-02-09   
989-400 0 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2004-01-29   
989-400 1 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344      
989-400 2 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344      
989-400 3 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344      
989-400 4 SGNWMIFAZMD  2550 123.NET, LLC 344   2003-03-08   
989-400 5 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2007-02-22   
989-400 6 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344      
989-400 7 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2005-11-04   
989-400 8 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2004-11-25   
989-400 9 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344      
989-408 A SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344      
989-408 0 SGNWMIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344   2021-12-10   
989-408 1 SGNWMIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344   2021-12-10   
989-408 2 SGNWMIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344   2021-12-10   
989-408 3 ALMAMIXGOMD  624H ONVOY SPECTRUM, LLC 344   2023-05-30   
989-408 4 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2023-04-20   
989-408 5 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2021-11-30   
989-408 6 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2021-11-30   
989-408 7 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2021-11-30   
989-408 8 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2021-07-25   
989-408 9 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2021-07-25   
989-444 A SGNWMIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-444 0 SGNWMIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-444 1 SGNWMIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-444 2 SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2011-10-24   
989-444 3 SGNWMIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344   2019-12-13   
989-444 4 SGNWMIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344   2020-01-24   
989-444 5 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2015-12-17   
989-444 6 SGNWMIFAXNX  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 344   2013-03-14   
989-444 7 SGNWMIFAXCY  508J CENTURYLINK COMMUNICATIONS, LLC 344   2015-05-07   
989-444 8 SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2011-09-22   
989-444 9 SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2011-05-14   
989-506 A SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344      
989-546 A SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344      
989-546 0 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2012-02-17   
989-546 1 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2015-12-17   
989-546 2 SGNWMIFAX5X  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 344   2006-11-05   

1 2 3 4 >>

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.