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: 319 [Rate centres in NPA 319] [Dial plan for NPA 319]

NXX: 243

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-243 A Cedar Falls IA CDFLIACODS0  9631 QWEST CORPORATION 635      
319-243 0 Cedar Falls IA CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-243 1 Cedar Falls IA CDRRIADTKMD  221F ONVOY, LLC - IA 635      
319-243 2 Cedar Falls IA CDFLIACODS0  9631 QWEST CORPORATION 635      
319-243 3 Cedar Falls IA CDRRIADTDMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 635      
319-243 4 Cedar Falls IA CDRRIAAB6MD  353E YMAX COMMUNICATIONS CORP. - IA 635      
319-243 5 Cedar Falls IA CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-243 6 Cedar Falls IA CDRRIADTKMD  221F ONVOY, LLC - IA 635      
319-243 7 Cedar Falls IA CDRRIADTKMD  221F ONVOY, LLC - IA 635      
319-243 8 Cedar Falls IA CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-243 9 Cedar Falls IA CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.