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.

NPA: 313 [Rate centres in NPA 313] [Dial plan for NPA 313]

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
313-246 6 Detroit Zone 5 MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2013-12-02   
313-246 7 Detroit Zone 5 MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2015-02-02   
313-246 8 Detroit Zone 5 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2014-10-12   
313-246 9 Detroit Zone 5 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2014-10-12   
313-247 A Detroit Zone 6 MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-248 A Detroit Zone 6 MI DRBRMIFBDS1  9323 MICHIGAN BELL TEL CO 340      
313-249 A Detroit Zone 5 MI SFLDMIOKDS0  9323 MICHIGAN BELL TEL CO 340      
313-250 A Detroit Zone 5 MI SFLDMIMKDS2  6630 USA MOBILITY WIRELESS, INC. 340      
313-251 A Detroit Zone 6 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      
313-251 0 Detroit Zone 6 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 1 Detroit Zone 6 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 2 Detroit Zone 6 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 3 Detroit Zone 6 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 4 Detroit Zone 6 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 5 Detroit Zone 6 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 6 Detroit Zone 6 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 7 Detroit Zone 6 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 8 Detroit Zone 6 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 9 Detroit Zone 6 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-02-25   
313-252 A Detroit Zone 3 MI HGPKMITSDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 A Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 0 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 1 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 2 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 3 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 4 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 5 Detroit Zone 6 MI FLNTMICD0MD  829J PAETEC ITEL, LLC 340   2013-08-30   
313-253 6 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 7 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 8 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 9 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-254 A Detroit Zone 6 MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-254 0 Detroit Zone 6 MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-01-16   
313-254 1 Detroit Zone 6 MI FLNTMICD0MD  829J PAETEC ITEL, LLC 340   2007-03-01   
313-254 2 Detroit Zone 6 MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2016-11-18   
313-254 3 Detroit Zone 6 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2014-10-12   
313-254 4 Detroit Zone 6 MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-254 5 Detroit Zone 6 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2020-09-12   
313-254 6 Detroit Zone 6 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2020-09-12   
313-254 7 Detroit Zone 6 MI   145J TERRA NOVA TELECOM INC. 340   2021-05-26   
313-254 8 Detroit Zone 6 MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2005-01-02   
313-254 9 Detroit Zone 6 MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2013-12-26   
313-255 A Detroit Zone 5 MI DTRTMIRFDS0  9323 MICHIGAN BELL TEL CO 340      
313-256 A Detroit Zone 1 MI DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-256 0 Detroit Zone 1 MI DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-256 1 Detroit Zone 1 MI FLNTMICD0MD  829J PAETEC ITEL, LLC 340   2005-12-12   
313-256 2 Detroit Zone 1 MI DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-256 3 Detroit Zone 1 MI DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-256 4 Detroit Zone 1 MI DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-256 5 Detroit Zone 1 MI DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-256 6 Detroit Zone 1 MI DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-256 7 Detroit Zone 1 MI DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-256 8 Detroit Zone 1 MI DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-256 9 Detroit Zone 1 MI DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-257 A Detroit Zone 3 MI LIVNMIUX0MD  5562 METROPCS, INC. 340      
313-257 0 Detroit Zone 3 MI LIVNMIUX0MD  5562 METROPCS, INC. 340   2018-11-11   
313-257 1 Detroit Zone 3 MI LIVNMIUX0MD  5562 METROPCS, INC. 340   2018-11-11   
313-257 2 Detroit Zone 3 MI LIVNMIUX0MD  5562 METROPCS, INC. 340   2018-11-11   
313-257 3 Detroit Zone 3 MI LIVNMIUX0MD  5562 METROPCS, INC. 340   2018-11-11   
313-257 4 Detroit Zone 3 MI LIVNMIUX0MD  5562 METROPCS, INC. 340   2018-11-11   
313-257 5 Detroit Zone 3 MI LIVNMIUX0MD  5562 METROPCS, INC. 340   2018-11-11   
313-257 6 Detroit Zone 3 MI LIVNMIUX0MD  5562 METROPCS, INC. 340   2018-11-11   
313-257 7 Detroit Zone 3 MI LIVNMIUX0MD  5562 METROPCS, INC. 340   2018-11-11   
313-257 8 Detroit Zone 3 MI LIVNMIUX0MD  5562 METROPCS, INC. 340   2018-11-11   
313-257 9 Detroit Zone 3 MI LIVNMIUX0MD  5562 METROPCS, INC. 340   2018-11-11   
313-258 A Detroit Zone 6 MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-259 A Detroit Zone 1 MI DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      
313-260 A Detroit Zone 5 MI CMPTMIIFCM0  9748 AMERICAN MESSAGING SERVICES, LLC 340      
313-261 A Detroit Zone 1 MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340      
313-261 0 Detroit Zone 1 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-05-16   
313-261 1 Detroit Zone 1 MI SFLDMIMK0MD  478J NUSO, LLC 340   2023-12-11   
313-261 2 Detroit Zone 1 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-05-16   
313-261 3 Detroit Zone 1 MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2016-05-16   
313-261 4 Detroit Zone 1 MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2016-05-16   
313-261 5 Detroit Zone 1 MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2016-05-16   
313-261 6 Detroit Zone 1 MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2016-05-16   
313-261 7 Detroit Zone 1 MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2016-05-16   
313-261 8 Detroit Zone 1 MI BRHMMIBDBMD  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340   2016-06-24   
313-261 9 Detroit Zone 1 MI SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340   2016-06-29   
313-262 A Detroit Zone 1 MI SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-262 0 Detroit Zone 1 MI SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-262 1 Detroit Zone 1 MI SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-262 2 Detroit Zone 1 MI SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-262 3 Detroit Zone 1 MI SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-262 4 Detroit Zone 1 MI SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-262 5 Detroit Zone 1 MI SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
313-262 6 Detroit Zone 1 MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2010-09-14   
313-262 7 Detroit Zone 1 MI FLNTMICD0MD  829J PAETEC ITEL, LLC 340   2005-04-10   
313-262 8 Detroit Zone 1 MI SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340   2005-04-25   
313-262 9 Detroit Zone 1 MI SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340   2005-04-25   
313-263 A Detroit Zone 1 MI DTRTMIBADS1  7421 AT&T - LOCAL 340      
313-263 0 Detroit Zone 1 MI SFLDMIDICA0  2550 123.NET, LLC 340   2003-01-25   
313-263 1 Detroit Zone 1 MI SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340   2004-05-10   
313-263 2 Detroit Zone 1 MI SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340   2004-05-10   
313-263 3 Detroit Zone 1 MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2004-08-12   
313-263 4 Detroit Zone 1 MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2004-07-12   
313-263 5 Detroit Zone 1 MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2014-03-03   
313-263 6 Detroit Zone 1 MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2020-09-04   
313-263 7 Detroit Zone 1 MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2015-09-11   
313-263 8 Detroit Zone 1 MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2005-07-09   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 >>

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.