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: 870 [Rate centres in NPA 870] [Dial plan for NPA 870]

NXX: 521

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
870-521 A Newark AR LTRKAR10G01  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 528      
870-521 0 Newark AR LTRKARZO2MD  073H TELNYX LLC 528   2018-12-25   
870-521 1 Newark AR LTRKARFRXLY  348F ONVOY, LLC - AR 528   2020-10-17   
870-521 2 Newark AR LTRKARFRXLY  348F ONVOY, LLC - AR 528   2020-10-17   
870-521 3 Newark AR LTRKARFRXLY  348F ONVOY, LLC - AR 528   2021-04-18   
870-521 4 Newark AR LTRKARFRXLY  348F ONVOY, LLC - AR 528   2021-04-18   
870-521 5 Newark AR LTRKARFRXLY  348F ONVOY, LLC - AR 528   2020-03-13   
870-521 6 Newark AR LTRKARFRXLY  348F ONVOY, LLC - AR 528   2021-08-08   
870-521 7 Newark AR LTRKARFRXLY  348F ONVOY, LLC - AR 528   2021-08-08   
870-521 8 Newark AR JNBOARMAXMD  048G TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 528   2022-06-08   
870-521 9 Newark AR LTRKAR10G01  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 528   2018-12-24   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.