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.

Houghton Lake, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
989-202 A SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344      
989-202 0   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2014-05-05   
989-202 1   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2006-11-28   
989-202 2   792K CHARTER IP ENABLED SERVICES, LLC 344   2007-03-18   
989-202 4   792K CHARTER IP ENABLED SERVICES, LLC 344   2008-09-04   
989-202 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344   2009-09-26   
989-202 6   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 344   2011-03-01   
989-202 7   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2013-08-24   
989-202 8   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2014-05-05   
989-202 9   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2014-05-05   
989-279 A SGNWMIFAXJX  991E BANDWIDTH.COM CLEC, LLC - MI 344      
989-279 0   991E BANDWIDTH.COM CLEC, LLC - MI 344   2018-08-25   
989-279 1   543C ONVOY, LLCV - MI 344   2023-08-26   
989-279 2   543C ONVOY, LLCV - MI 344   2021-03-05   
989-279 3   543C ONVOY, LLCV - MI 344   2021-03-05   
989-279 4   624H ONVOY SPECTRUM, LLC 344   2023-05-30   
989-279 5   543C ONVOY, LLCV - MI 344   2023-07-08   
989-279 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344   2026-02-14   
989-279 7   543C ONVOY, LLCV - MI 344   2020-11-21   
989-279 8   543C ONVOY, LLCV - MI 344   2020-11-21   
989-279 9   516J TON80 COMMUNICATIONS, LLC 344   2022-04-05   
989-302 A SGNWMIFAXFY  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344      
989-302 0   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344      
989-302 1   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344      
989-302 2   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344      
989-302 3   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344      
989-302 4   2550 123.NET, LLC 344   2003-03-08   
989-302 5   508J CENTURYLINK COMMUNICATIONS, LLC 344   2015-05-07   
989-302 6   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344      
989-302 7   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344      
989-302 8   792K CHARTER IP ENABLED SERVICES, LLC 344   2016-06-11   
989-302 9   3535 ACD TELECOM, INC. - MI 344   2011-09-05   
989-366 A PDVLMIXMRS0  0695 FRONTIER NORTH, INC. - MI 344      
989-422 A HGPTMIXLRS0  0695 FRONTIER NORTH, INC. - MI 344      
989-422 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344   2015-10-28   
989-422 1   691A DAYSTARR, LLC DBA DAYSTARR COMMUNICATIONS - MI 344   2005-11-27   
989-422 2   0695 FRONTIER NORTH, INC. - MI 344      
989-422 3   0695 FRONTIER NORTH, INC. - MI 344      
989-422 4   0695 FRONTIER NORTH, INC. - MI 344      
989-422 5   0695 FRONTIER NORTH, INC. - MI 344      
989-422 6   0695 FRONTIER NORTH, INC. - MI 344      
989-422 7   0695 FRONTIER NORTH, INC. - MI 344      
989-422 8   543C ONVOY, LLCV - MI 344   2015-08-13   
989-422 9   543C ONVOY, LLCV - MI 344   2015-08-13   
989-538 A SGNWMIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-538 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-538 1   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2014-05-05   
989-538 2   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2014-05-05   
989-538 3   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2014-05-05   
989-538 4   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2014-05-05   
989-538 5   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2014-05-05   
989-538 6   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 344   2014-04-16   
989-538 7   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2014-05-05   
989-538 8   543C ONVOY, LLCV - MI 344   2013-03-15   
989-538 9   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2014-05-05   
989-910 A   817J INTERACTIVE SERVICES NETWORK, INC. 344      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.