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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
313-685 A Detroit Zone 5 MI DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340      
313-685 0 Detroit Zone 5 MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340      
313-685 1 Detroit Zone 5 MI   5562 METRO PCS, INC. 340   2007-03-10   
313-685 2 Detroit Zone 5 MI   5562 METRO PCS, INC. 340   2007-03-10   
313-685 3 Detroit Zone 5 MI   5562 METRO PCS, INC. 340   2007-03-10   
313-685 4 Detroit Zone 5 MI   5562 METRO PCS, INC. 340   2007-03-10   
313-685 5 Detroit Zone 5 MI   5562 METRO PCS, INC. 340   2007-03-10   
313-685 6 Detroit Zone 5 MI   5562 METRO PCS, INC. 340   2007-03-10   
313-685 7 Detroit Zone 5 MI   5562 METRO PCS, INC. 340   2007-03-10   
313-685 8 Detroit Zone 5 MI   5562 METRO PCS, INC. 340   2007-03-10   
313-685 9 Detroit Zone 5 MI   5562 METRO PCS, INC. 340   2007-03-10   

Last updated: Sat, 27 Jul 2019 10:59:49 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.