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: 989

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
870-989 A Black Rock AR LTRKARFRXMZ  515J IP HORIZON LLC 528   2024-04-08   
870-989 0 Black Rock AR JNBOARMAX1X  624H ONVOY SPECTRUM, LLC 528   2025-01-07   
870-989 1 Black Rock AR   515J IP HORIZON LLC 528   2024-04-08   
870-989 9 Black Rock AR LTRKARZO3MD  145J TERRA NOVA TELECOM INC. 528   2024-04-19   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.