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: 731 [Rate centres in NPA 731] [Dial plan for NPA 731]

NXX: 831

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
731-831 A Sidonia TN MMPHTNMAY4X  624H ONVOY SPECTRUM, LLC 468      
731-831 0 Sidonia TN MMPHTNMA38Z  525E ONVOY, LLC - TN 468      
731-831 3 Sidonia TN MMPHTNMAY4X  624H ONVOY SPECTRUM, LLC 468      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.