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.

Romeo, MI

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
586-531 1   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
586-531 2   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
586-531 3   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
586-531 4   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
586-531 5   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
586-531 6   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
586-531 7   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
586-531 8   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
586-531 9   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
586-540 A   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
586-540 0   145J TERRA NOVA TELECOM INC. 340   2025-07-10   
586-540 1   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
586-540 2   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2021-10-19   
586-540 3   3535 ACD TELECOM, INC. - MI 340   2005-12-09   
586-540 5   624H ONVOY SPECTRUM, LLC 340   2021-10-21   
586-540 6   046L CLEAR RATE COMMUNICATIONS, LLC 340   2009-11-14   
586-540 7   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-11-04   
586-540 8   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340   2005-02-18   
586-540 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2025-09-17   
586-589 A   817J INTERACTIVE SERVICES NETWORK, INC. 340      
586-623 A SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
586-623 0   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-11-04   
586-623 1   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-09-14   
586-623 2   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2005-12-05   
586-623 3   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2005-12-05   
586-623 4   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
586-623 5   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2005-04-16   
586-623 6   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2005-04-16   
586-623 7   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2005-10-27   
586-623 8   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2005-10-27   
586-623 9   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2005-08-17   
586-651 A DTRTMIDJCMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340      
586-752 A ROMOMIMNDS0  9323 MICHIGAN BELL TEL CO 340      
586-785 A WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
586-785 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2018-06-15   
586-785 1   792K CHARTER IP ENABLED SERVICES, LLC 340   2015-10-01   
586-785 2   516J TON80 COMMUNICATIONS, LLC 340   2022-02-22   
586-785 3   318J COMCAST IP PHONE, LLC 340   2015-05-28   
586-785 4   543C ONVOY, LLCV - MI 340   2016-04-06   
586-785 5   543C ONVOY, LLCV - MI 340   2016-04-06   
586-785 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2017-02-07   
586-785 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2017-02-07   
586-785 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2016-02-01   
586-785 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2016-02-01   
586-894 A SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
586-894 0   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
586-894 2   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2011-01-07   
586-894 3   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2006-12-05   
586-894 5   543C ONVOY, LLCV - MI 340   2021-07-30   
586-894 6   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
586-894 7   543C ONVOY, LLCV - MI 340   2021-07-30   
586-894 8   991E BANDWIDTH.COM CLEC, LLC - MI 340   2011-02-25   
586-894 9   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2021-12-27   
586-960 A FLNTMICD0MD  829J PAETEC ITEL, LLC 340      
586-960 0   829J PAETEC ITEL, LLC 340      
586-960 1   829J PAETEC ITEL, LLC 340      
586-960 2   829J PAETEC ITEL, LLC 340      
586-960 3   991E BANDWIDTH.COM CLEC, LLC - MI 340   2016-08-21   
586-960 4   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2011-08-15   
586-960 5   991E BANDWIDTH.COM CLEC, LLC - MI 340   2014-09-07   
586-960 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2018-06-15   
586-960 7   829J PAETEC ITEL, LLC 340      
586-960 8   829J PAETEC ITEL, LLC 340      
586-960 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2018-06-15   

<< 1 2

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.