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.

Shell Rock, IA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
319-421 A   593K MCC TELEPHONY LLC 635      
319-421 1 MNTIIAAKDS0  544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 635      
319-421 2 IWCYIA7000Z  490J DISH WIRELESS, LLC 635      
319-421 4 CDRRIADT1MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 635      
319-421 8 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-421 9   593K MCC TELEPHONY LLC 635      
319-885 A PLFDIAXODS1  1115 BUTLER-BREMER MUTUAL TEL. CO. 635      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.