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: 610

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
870-610 A Hatfield AR GLWDARXA0MD  348F ONVOY, LLC - AR 528      
870-610 0 Hatfield AR   348F ONVOY, LLC - AR 528   2022-10-27   
870-610 1 Hatfield AR   624H ONVOY SPECTRUM, LLC 528   2025-01-07   
870-610 2 Hatfield AR   5179 LEVEL 3 COMMUNICATIONS, LLC - AR 528   2021-01-17   
870-610 6 Hatfield AR   348F ONVOY, LLC - AR 528   2021-06-25   
870-610 7 Hatfield AR   508J CENTURYLINK COMMUNICATIONS, LLC 528   2015-03-16   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.