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.

Concord, AR

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
870-668 A CNCRARMARS2  9533 SOUTHWESTERN BELL 528      
870-668 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 528      
870-668 1   9533 SOUTHWESTERN BELL 528      
870-668 2   516C AT&T CORP. 528   2011-04-25   
870-668 3   9533 SOUTHWESTERN BELL 528      
870-668 4   145J TERRA NOVA TELECOM INC. 528   2020-11-11   
870-668 5   348F ONVOY, LLC - AR 528   2020-03-12   
870-668 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 528   2011-12-01   
870-668 7   5179 LEVEL 3 COMMUNICATIONS, LLC - AR 528   2015-01-13   
870-668 8   073H TELNYX LLC 528   2018-11-26   
870-668 9   9533 SOUTHWESTERN BELL 528      
870-967 A LTRKARFRXLY  348F ONVOY, LLC - AR 528      
870-967 0   515J IP HORIZON LLC 528   2024-03-24   
870-967 1   624H ONVOY SPECTRUM, LLC 528   2025-01-07   
870-967 2   348F ONVOY, LLC - AR 528   2023-06-19   
870-967 8   348F ONVOY, LLC - AR 528   2023-03-13   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.