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 6, MI

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
313-384 A LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-386 A LNPKMIATDS0  9323 MICHIGAN BELL TEL CO 340      
313-388 A LNPKMIATDS0  9323 MICHIGAN BELL TEL CO 340      
313-389 A LNPKMIATDS0  9323 MICHIGAN BELL TEL CO 340      
313-389 0 LNPKMIATDS0  9323 MICHIGAN BELL TEL CO 340      
313-389 1 LNPKMIATDS0  9323 MICHIGAN BELL TEL CO 340      
313-389 2 LNPKMIATDS0  9323 MICHIGAN BELL TEL CO 340      
313-389 3 LNPKMIATDS0  9323 MICHIGAN BELL TEL CO 340      
313-389 4 LNPKMIATDS0  9323 MICHIGAN BELL TEL CO 340      
313-389 5 LNPKMIATDS0  9323 MICHIGAN BELL TEL CO 340      
313-389 6 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2010-03-05   
313-389 7 LNPKMIATDS0  9323 MICHIGAN BELL TEL CO 340      
313-389 8 LNPKMIATDS0  9323 MICHIGAN BELL TEL CO 340      
313-389 9 LNPKMIATDS0  9323 MICHIGAN BELL TEL CO 340      
313-390 A DRBRMIFBDS1  9323 MICHIGAN BELL TEL CO 340      
313-395 A LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-395 0 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2014-12-21   
313-395 1 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2014-12-21   
313-395 2 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2016-04-25   
313-395 3 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2016-07-18   
313-395 4 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2016-08-19   
313-395 5 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2016-08-19   
313-395 6 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2017-02-10   
313-395 7 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2017-08-14   
313-395 8 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-11-01   
313-395 9 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2014-12-07   
313-403 A LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-403 0 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-02-11   
313-403 1 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-02-11   
313-403 2 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-11-01   
313-403 3 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-11-01   
313-403 4 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-11-01   
313-403 5 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-11-01   
313-403 6 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-12-06   
313-403 7 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2019-01-11   
313-403 8 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2019-01-11   
313-403 9 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2014-12-07   
313-406 A WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
313-406 0 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2013-06-17   
313-406 1 LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2013-06-17   
313-406 2 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
313-406 3 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
313-406 4 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
313-406 5 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
313-406 6 SFLDMITOJMD  961J WOW! INTERNET, CABLE AND PHONE 340   2007-08-02   
313-406 7 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2005-09-22   
313-406 8 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2005-09-22   
313-406 9 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
313-414 A LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-415 A LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-425 A DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-425 0 DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-425 1 LIVNMIUX0MD  5562 METROPCS, INC. 340   2006-01-29   
313-425 2 DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-425 3 DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-425 4 DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-425 5 SFLDMIMKDS2  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340   2019-12-30   
313-425 6 LIVNMIUX0MD  5562 METROPCS, INC. 340   2007-02-26   
313-425 7 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2013-11-20   
313-425 8 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2013-11-20   
313-425 9   3535 ACD TELECOM, INC. - MI 340   2005-12-08   
313-427 A SFLDMITODS2  543C ONVOY, LLCV - MI 340   2025-01-12   
313-427 0 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2008-11-17   
313-427 1 DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2024-12-04   
313-427 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2025-04-08   
313-427 3 DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2024-12-04   
313-427 4 LIVNMIUX0MD  5562 METROPCS, INC. 340   2009-01-06   
313-427 5 LIVNMIUX0MD  5562 METROPCS, INC. 340   2009-01-06   
313-427 6 LIVNMIUX0MD  5562 METROPCS, INC. 340   2009-01-06   
313-427 7 LIVNMIUX0MD  5562 METROPCS, INC. 340   2009-01-06   
313-427 8 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2014-05-02   
313-427 9 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2009-03-07   
313-429 A DTRTMIBADS0  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
313-429 0 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-07-03   
313-429 1 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-07-03   
313-429 2 DTRTMIBADS0  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
313-429 3 SFLDMITOJMD  961J WOW! INTERNET, CABLE AND PHONE 340   2006-06-08   
313-429 4 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2014-07-19   
313-429 5 FLNTMICD0MD  829J PAETEC ITEL, LLC 340   2008-06-19   
313-429 6 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340   2005-07-19   
313-429 7 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340   2005-07-19   
313-429 8 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340   2005-07-19   
313-429 9 SFLDMITOJMD  961J WOW! INTERNET, CABLE AND PHONE 340   2007-08-15   
313-435 A SFLDMITODS2  543C ONVOY, LLCV - MI 340      
313-435 0 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2023-08-22   
313-435 1 DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2023-10-09   
313-435 2 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2023-08-20   
313-435 3 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2023-08-20   
313-435 4 DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2024-02-08   
313-435 5 DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2024-02-08   
313-435 6 DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2024-03-31   
313-435 7 DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2024-03-31   
313-435 8 DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2023-11-02   
313-435 9 DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2023-11-02   
313-436 A DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-436 0 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2012-03-18   
313-436 1 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2011-06-22   
313-436 2 DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-436 3 DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-436 4 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2011-06-22   

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

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.