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.

Switch: GNBONCEU39Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
336-210 A Greensboro NC 8645 SUNCOM DBA T-MOBILE USA 424      
336-255 A Greensboro NC 8645 SUNCOM DBA T-MOBILE USA 424      
336-456 A Greensboro NC 8645 SUNCOM DBA T-MOBILE USA 424      
336-772 A Greensboro NC 8645 SUNCOM DBA T-MOBILE USA 424   2005-01-17   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.