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]

NXX: 725

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
313-725 A Detroit Zone 1 MI SFLDMIWKDS2  4125 XO COMMUNICATIONS SERVICES, INC. - MI 340      
313-725 0 Detroit Zone 1 MI LIVNMIUX0MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2011-07-20   
313-725 1 Detroit Zone 1 MI LIVNMIUX0MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2013-07-13   
313-725 2 Detroit Zone 1 MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2018-09-17   
313-725 3 Detroit Zone 1 MI SFLDMIWKDS2  4125 XO COMMUNICATIONS SERVICES, INC. - MI 340   2011-01-31   
313-725 4 Detroit Zone 1 MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2019-05-09   
313-725 5 Detroit Zone 1 MI SFLDMIWKDS2  4125 XO COMMUNICATIONS SERVICES, INC. - MI 340   2011-01-31   
313-725 6 Detroit Zone 1 MI DTRTMIBHGMD  156J RCLEC, INC. 340   2019-02-15   
313-725 7 Detroit Zone 1 MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2018-09-17   
313-725 8 Detroit Zone 1 MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2019-03-03   
313-725 9 Detroit Zone 1 MI SFLDMIMKDS2  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340   2019-03-08   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.