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 1, MI

<< 1 2 3 4 5 6 7 8 9 10 11 12 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
313-784 6 LIVNMIUX0MD  5562 METROPCS, INC. 340   2006-10-26   
313-784 7 LIVNMIUX0MD  5562 METROPCS, INC. 340   2006-10-26   
313-784 8 LIVNMIUX0MD  5562 METROPCS, INC. 340   2006-10-26   
313-784 9 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
313-800 A SFLDMITODS2  543C ONVOY, LLCV - MI 340      
313-800 0 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2015-10-10   
313-800 1 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2016-02-05   
313-800 2 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2016-02-05   
313-800 3 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2016-02-05   
313-800 4 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-03-28   
313-800 5 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2016-03-29   
313-800 6 BRHMMIBDBMD  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340   2016-01-21   
313-800 7 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-03-11   
313-800 8 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2015-10-10   
313-800 9 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-03-11   
313-816 A DTRTMIBADS6  948H AIRUS, INC. - MI 340      
313-816 0 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-12-29   
313-816 1 DTRTMIBADS6  948H AIRUS, INC. - MI 340   2018-10-22   
313-816 2 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-11-25   
313-816 3 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-11-25   
313-816 4 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-11-25   
313-816 5 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-11-25   
313-816 6 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-11-25   
313-816 7 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-12-29   
313-816 8 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-12-29   
313-816 9 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-12-29   
313-818 A LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-818 0 DTRTMIBASMD  516C AT&T CORP. 340   2015-01-27   
313-818 1 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2015-03-02   
313-818 2 SFLDMIMKNMD  460K FIRST COMMUNICATIONS, LLC 340   2015-06-12   
313-818 3 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2015-01-27   
313-818 4 BRHMMIBDBMD  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340   2015-01-27   
313-818 5 SFLDMIMKNMD  460K FIRST COMMUNICATIONS, LLC 340   2015-06-12   
313-818 6 BRHMMIBDBMD  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340   2015-05-15   
313-818 7 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2015-07-03   
313-818 8 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2015-01-24   
313-818 9 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2015-01-24   
313-831 A DTRTMICLDS0  9323 MICHIGAN BELL TEL CO 340      
313-831 0 DTRTMICLDS0  9323 MICHIGAN BELL TEL CO 340      
313-831 1 DTRTMICLDS0  9323 MICHIGAN BELL TEL CO 340      
313-831 2 DTRTMICLDS0  9323 MICHIGAN BELL TEL CO 340      
313-831 3 DTRTMICLDS0  9323 MICHIGAN BELL TEL CO 340      
313-831 4 DTRTMICLDS0  9323 MICHIGAN BELL TEL CO 340      
313-831 5 DTRTMICLDS0  9323 MICHIGAN BELL TEL CO 340      
313-831 6 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2019-05-09   
313-831 7 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2019-05-09   
313-831 8 DTRTMICLDS0  9323 MICHIGAN BELL TEL CO 340      
313-831 9 DTRTMICLDS0  9323 MICHIGAN BELL TEL CO 340      
313-832 A DTRTMICLDS0  9323 MICHIGAN BELL TEL CO 340      
313-833 A DTRTMICLDS0  9323 MICHIGAN BELL TEL CO 340      
313-870 A DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-870 0 DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-870 1 DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-870 2 DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-870 3 DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-870 4 DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-870 5 DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-870 6 DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-870 7 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2010-02-15   
313-870 8 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2010-02-15   
313-870 9 DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-871 A DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-872 A DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-872 0 DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-872 1 DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-872 2 DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-872 3 DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-872 4 DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-872 5 DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-872 6 DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-872 7 DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-872 8 SFLDMIMK0MD  478J NUSO, LLC 340   2023-12-11   
313-872 9 DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-873 A DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-874 A DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-875 A DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-876 A DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-877 A DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      
313-877 0 DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      
313-877 1 DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-877 2 DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-877 3 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2014-12-03   
313-877 4 DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      
313-877 5 DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      
313-877 6 DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      
313-877 7 DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      
313-877 8 DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      
313-877 9 DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      
313-879 A SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-879 0 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-06-03   
313-879 1 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2005-06-03   
313-879 2 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2005-06-03   
313-879 3 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2005-06-03   
313-879 4 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-879 5 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2004-08-27   
313-879 6 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340   2007-05-25   
313-879 7 LIVNMIUX0MD  5562 METROPCS, INC. 340   2006-10-26   
313-879 8 LIVNMIUX0MD  5562 METROPCS, INC. 340   2006-10-26   
313-879 9 LIVNMIUX0MD  5562 METROPCS, INC. 340   2006-10-26   
313-880 A SFLDMITOCMD  597F VOIP INNOVATIONS, LLC 340      

<< 1 2 3 4 5 6 7 8 9 10 11 12 >>

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.