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: 361 [Rate centres in NPA 361] [Dial plan for NPA 361]

NXX: 316

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
361-316 A Three Rivers TX CRCHTXTUX5Y  903C ONVOY, LLC - TX 564      

Last updated: Tue, 30 May 2023 01:08:39 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.