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: CDRRIADTX2X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
319-205 A Mount Vernon IA 7575 CENTURYLINK COMMUNICATIONS LLC 635      
319-249 A Cedar Rapids IA 7575 CENTURYLINK COMMUNICATIONS LLC 635      
319-281 A Hudson IA 7575 CENTURYLINK COMMUNICATIONS LLC 635      
319-888 A Waterloo IA 7575 CENTURYLINK COMMUNICATIONS LLC 635      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.