Local Calling Guide

Area code/prefix search

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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   073H TELNYX LLC 528   2018-12-25   
870-521 1 Newark AR   348F ONVOY, LLC - AR 528   2020-10-17   
870-521 2 Newark AR   348F ONVOY, LLC - AR 528   2020-10-17   
870-521 3 Newark AR   348F ONVOY, LLC - AR 528   2021-04-18   
870-521 4 Newark AR   348F ONVOY, LLC - AR 528   2021-04-18   
870-521 5 Newark AR   348F ONVOY, LLC - AR 528   2020-03-13   
870-521 6 Newark AR   348F ONVOY, LLC - AR 528   2021-08-08   
870-521 7 Newark AR   348F ONVOY, LLC - AR 528   2021-08-08   
870-521 8 Newark AR   048G TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 528   2022-06-08   
870-521 9 Newark AR   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 528   2018-12-24   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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