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
313-256 3 DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-256 4 DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-256 5 DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-256 6 DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-256 7 DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-256 8 DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-256 9 DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-259 A DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      
313-261 A SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340      
313-261 0 SFLDMITODS2  543C ONVOY, LLCV - MI 340      
313-261 1 SFLDMIMK0MD  478J NUSO, LLC 340      
313-261 2 SFLDMITODS2  543C ONVOY, LLCV - MI 340      
313-261 3 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340      
313-261 4 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340      
313-261 5 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340      
313-261 6 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340      
313-261 7 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340      
313-261 8 BRHMMIBDBMD  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
313-261 9 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-262 A SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-262 0 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-262 1 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-262 2 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-262 3 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-262 4 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-262 5 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-262 6 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
313-262 7   829J PAETEC ITEL, LLC 340      
313-262 8 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-262 9 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-263 A DTRTMIBADS1  7421 AT&T - LOCAL 340      
313-263 0 SFLDMIDICA0  2550 123.NET, LLC 340      
313-263 1 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-263 2 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-263 3 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-263 4 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-263 5 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-263 6 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-263 7 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340      
313-263 8 LIVNMIUX0MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-263 9 DTRTMIBADS1  7421 AT&T - LOCAL 340      
313-265 A LIVNMIUX0MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-265 0 LIVNMIUX0MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-265 1 LIVNMIUX0MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-265 2 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-265 3 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
313-265 4   829J PAETEC ITEL, LLC 340      
313-265 5 LIVNMIUX0MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-265 6 LIVNMIUX0MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-265 7 LIVNMIUX0MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-265 8 LIVNMIUX0MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-265 9 LIVNMIUX0MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-280 A SFLDMIMKDS2  6630 USA MOBILITY WIRELESS, INC. 340      
313-285 A SFLDMITODS2  543C ONVOY, LLCV - MI 340      
313-285 0 LIVNMIUX0MD  5562 METROPCS, INC. 340      
313-285 1 SFLDMITODS2  543C ONVOY, LLCV - MI 340      
313-285 2 SFLDMITODS2  543C ONVOY, LLCV - MI 340      
313-285 3 SFLDMITODS2  543C ONVOY, LLCV - MI 340      
313-285 4 LIVNMIUX0MD  5562 METROPCS, INC. 340      
313-285 5   829J PAETEC ITEL, LLC 340      
313-285 6 LIVNMIUX0MD  5562 METROPCS, INC. 340      
313-285 7 LIVNMIUX0MD  5562 METROPCS, INC. 340      
313-285 8 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
313-285 9 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
313-293 A LIVNMIUX0MD  5562 METROPCS, INC. 340      
313-293 0 LIVNMIUX0MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-293 1 LIVNMIUX0MD  5562 METROPCS, INC. 340      
313-293 2 LIVNMIUX0MD  5562 METROPCS, INC. 340      
313-293 3 BRHMMIBDBMD  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
313-293 4 LIVNMIUX0MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-293 5 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-293 6 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-293 7 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340      
313-293 8 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340      
313-293 9 LIVNMIUX0MD  5562 METROPCS, INC. 340      
313-298 A DTRTMIMDRPA  9323 MICHIGAN BELL TEL CO 340      
313-309 A   829J PAETEC ITEL, LLC 340      
313-309 0   829J PAETEC ITEL, LLC 340      
313-309 1   829J PAETEC ITEL, LLC 340      
313-309 2   829J PAETEC ITEL, LLC 340      
313-309 3   829J PAETEC ITEL, LLC 340      
313-309 4   829J PAETEC ITEL, LLC 340      
313-309 5   829J PAETEC ITEL, LLC 340      
313-309 6   829J PAETEC ITEL, LLC 340      
313-309 7   829J PAETEC ITEL, LLC 340      
313-309 8   279B CLEAR RATE COMMUNICATIONS, INC. - MI 340      
313-309 9   829J PAETEC ITEL, LLC 340      
313-324 A DTRTMIBADS0  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
313-324 0 DTRTMIBADS0  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
313-324 1 DTRTMIBADS0  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
313-324 2 LIVNMIUX0MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-324 3 DTRTMIBADS0  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
313-324 4   829J PAETEC ITEL, LLC 340      
313-324 5 DTRTMIBADS0  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
313-324 6 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340      
313-324 7 DTRTMIBADS0  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
313-324 8 SFLDMIDNDS5  9714 GRID 4 COMMUNICATIONS, INC. - MI 340      
313-324 9 DTRTMIBADS0  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
313-329 A LIVNMIUX0MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-329 0 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340      

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

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.