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.

Black Rock, AR

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
870-878 A BLRKARMARS2  9533 SOUTHWESTERN BELL 528      
870-878 0 LTRKARFRXPY  802C TELEPORT COMMUNICATIONS AMERICA, LLC - AR 528   2023-01-12   
870-878 1 LTRKAR10G01  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 528      
870-878 2 LTRKAR10G01  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 528      
870-878 3 WMMPARMAAMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 528   2011-10-01   
870-878 4 LTRKARFRXWY  516C AT&T CORP. 528   2011-04-25   
870-878 5 LTRKARZO2MD  073H TELNYX LLC 528   2018-11-26   
870-878 6 BLRKARMARS2  9533 SOUTHWESTERN BELL 528      
870-878 7 RLVLARFI2MD  508J CENTURYLINK COMMUNICATIONS, LLC 528   2015-01-13   
870-878 8 LTRKARWTBMD  5179 LEVEL 3 COMMUNICATIONS, LLC - AR 528   2018-05-13   
870-878 9 LTRKARFRXLY  348F ONVOY, LLC - AR 528   2020-03-12   
870-989 A   515J IP HORIZON LLC 528   2024-04-08   
870-989 1   515J IP HORIZON LLC 528   2024-04-08   
870-989 9   145J TERRA NOVA TELECOM INC. 528   2024-04-19   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.