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: 720

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-720 A Cedar Rapids IA CDRRIAXX3MD  938D WINDSTREAM IT-COMM, LLC - IA 635      
319-720 0 Cedar Rapids IA CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635      
319-720 1 Cedar Rapids IA CDRRIAXX3MD  938D WINDSTREAM IT-COMM, LLC - IA 635      
319-720 2 Cedar Rapids IA CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635      
319-720 3 Cedar Rapids IA CDRRIADTDMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 635      
319-720 4 Cedar Rapids IA CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635      
319-720 5 Cedar Rapids IA CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-720 6 Cedar Rapids IA CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-720 7 Cedar Rapids IA CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-720 8 Cedar Rapids IA CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-720 9 Cedar Rapids IA IWCYIA70DS0  423H AIRUS, INC - IA 635      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.