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.

Alpena, MI

1 2 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
989-255 A SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344      
989-278 A SGNWMIFAZMD  2550 123.NET, LLC 344      
989-278 0   2550 123.NET, LLC 344   2003-05-29   
989-278 1   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2024-12-18   
989-278 2   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2008-03-14   
989-278 3   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2018-04-06   
989-278 4   9245 CYNERGYCOMM.NET, INC. - MI 344   2006-06-25   
989-278 5   046L CLEAR RATE COMMUNICATIONS, LLC 344   2009-11-14   
989-278 6   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2014-01-31   
989-278 7   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2016-10-22   
989-278 8   991E BANDWIDTH.COM CLEC, LLC - MI 344   2009-03-06   
989-278 9   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2007-07-17   
989-340 A   792K CHARTER IP ENABLED SERVICES, LLC 344      
989-340 0   792K CHARTER IP ENABLED SERVICES, LLC 344   2007-03-18   
989-340 1   792K CHARTER IP ENABLED SERVICES, LLC 344   2008-04-27   
989-340 2   792K CHARTER IP ENABLED SERVICES, LLC 344   2013-06-15   
989-340 3   543C ONVOY, LLCV - MI 344   2021-11-19   
989-340 4   0127 WINN TELEPHONE COMPANY DBA WINN TELECOM - MI 344   2011-03-18   
989-340 5   543C ONVOY, LLCV - MI 344   2021-11-19   
989-340 6   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 344   2014-04-12   
989-340 7   508J CENTURYLINK COMMUNICATIONS, LLC 344   2015-04-21   
989-340 8   543C ONVOY, LLCV - MI 344   2023-08-26   
989-340 9   145J TERRA NOVA TELECOM INC. 344   2025-05-31   
989-354 A ALPEMIXGDS0  0695 FRONTIER NORTH, INC. - MI 344      
989-356 A ALPEMIXGDS0  0695 FRONTIER NORTH, INC. - MI 344      
989-358 A ALPEMIXGDS0  0695 FRONTIER NORTH, INC. - MI 344      
989-419 A   817J INTERACTIVE SERVICES NETWORK, INC. 344      
989-464 A SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344      
989-590 A SGNWMIFAXOY  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344      
989-590 0   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344      
989-590 1   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2018-11-28   
989-590 2   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344      
989-590 3   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344      
989-590 4   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2020-04-16   
989-590 5   543C ONVOY, LLCV - MI 344   2022-04-01   
989-590 6   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2026-01-19   
989-590 7   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344      
989-590 8   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344      
989-590 9   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 344   2023-11-23   
989-591 A SGNWMIACDS1  6630 USA MOBILITY WIRELESS, INC. 344      
989-603 A SGNWMIFAXDX  9748 AMERICAN MESSAGING SERVICES, LLC 344      
989-657 A GRYLMIAT7MD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-657 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-657 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-657 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-657 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-657 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-657 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-657 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-657 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344   2025-09-12   

1 2 >>

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.