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.

Detroit Zone 3, MI

<< 1 2 3 4 5 6 7 8 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
313-731 8 FLNTMICD0MD  829J PAETEC ITEL, LLC 340   2006-04-03   
313-731 9 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-733 A SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-733 0 SFLDMIDICA0  2550 123.NET, LLC 340   2008-03-13   
313-733 1 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-733 2 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340   2006-07-06   
313-733 3 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-733 4 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2007-07-24   
313-733 5 FLNTMICD0MD  829J PAETEC ITEL, LLC 340   2007-09-26   
313-733 6 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2007-07-24   
313-733 7 LIVNMIUX0MD  5562 METROPCS, INC. 340   2006-07-22   
313-733 8 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2007-08-10   
313-733 9 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2020-09-12   
313-775 A LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-775 0 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2015-10-04   
313-775 1 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2015-10-04   
313-775 2 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2015-10-04   
313-775 3 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2015-10-04   
313-775 4 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2015-10-04   
313-775 5 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2015-10-04   
313-775 6 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2015-10-04   
313-775 7 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2015-10-04   
313-775 8 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2015-10-04   
313-775 9 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2015-10-04   
313-777 A SFLDMITODS2  543C ONVOY, LLCV - MI 340      
313-777 0 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2015-07-27   
313-777 1 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2015-07-27   
313-777 2 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2015-07-27   
313-777 3 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2015-07-27   
313-777 4 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2015-07-27   
313-777 5 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2015-07-27   
313-777 6 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2015-07-27   
313-777 7 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2015-04-20   
313-777 8 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2015-04-20   
313-777 9 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2015-07-27   
313-788 A SFLDMIMKDS2  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340      
313-788 0 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2016-02-05   
313-788 1 SFLDMIMKDS2  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340   2016-01-16   
313-788 2 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2016-02-05   
313-788 3 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2016-02-05   
313-788 4 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2016-02-05   
313-788 5 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2016-02-05   
313-788 6 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2016-02-05   
313-788 7 SFLDMIDC0MD  817J TELNET WORLDWIDE, INC. 340   2016-04-01   
313-788 8 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-04-28   
313-788 9 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-04-28   
313-826 A SFLDMIBVDS0  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
313-826 0 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2006-11-17   
313-826 1 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2006-11-17   
313-826 2 LIVNMIUX0MD  5562 METROPCS, INC. 340   2008-02-22   

<< 1 2 3 4 5 6 7 8 >>

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.