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: 524

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
870-524 A Waldo AR PNBLARJEX1Y  048G TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 530      
870-524 0 Waldo AR   048G TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 530      
870-524 1 Waldo AR   048G TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 530      
870-524 2 Waldo AR   624H ONVOY SPECTRUM, LLC 530   2024-07-01   
870-524 6 Waldo AR   802C TELEPORT COMMUNICATIONS AMERICA, LLC - AR 530   2022-09-19   
870-524 8 Waldo AR   073H TELNYX LLC 530   2022-09-16   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.