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: 792

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
248-792 A Birmingham MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
248-792 0 Birmingham MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2010-07-02   
248-792 1 Birmingham MI DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2007-04-27   
248-792 2 Birmingham MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
248-792 3 Birmingham MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2011-10-05   
248-792 4 Birmingham MI SFLDMITOJMD  961J WOW! INTERNET, CABLE AND PHONE 340   2004-08-15   
248-792 5 Birmingham MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2010-01-09   
248-792 6 Birmingham MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
248-792 7 Birmingham MI DTRTMIBASMD  516C AT&T CORP. 340   2006-06-30   
248-792 8 Birmingham MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2012-08-12   
248-792 9 Birmingham MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.