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: 936 [Rate centres in NPA 936] [Dial plan for NPA 936]

NXX: 818

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
936-818 A Corrigan TX HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.