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: 248 [Rate centres in NPA 248] [Dial plan for NPA 248]

NXX: 633

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
248-633 A Birmingham MI SFLDMIDICA0  2550 123 NET, INC. 340      
248-633 0 Birmingham MI   2550 123 NET, INC. 340      
248-633 1 Birmingham MI   2550 123 NET, INC. 340      
248-633 2 Birmingham MI   2550 123 NET, INC. 340      
248-633 3 Birmingham MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2007-10-15   
248-633 4 Birmingham MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2007-10-15   
248-633 5 Birmingham MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2007-10-15   
248-633 6 Birmingham MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2008-03-13   
248-633 7 Birmingham MI   1200 TALK AMERICA INC. - MI 340   2007-12-11   
248-633 8 Birmingham MI   991E BANDWIDTH.COM CLEC, LLC - MI 340   2011-06-26   
248-633 9 Birmingham MI   2550 123 NET, INC. 340      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.