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: 200

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
731-200 A Trenton TN MMPHTNMA38Z  525E ONVOY, LLC - TN 468      
731-200 0 Trenton TN MMPHTNMA38Z  525E ONVOY, LLC - TN 468      
731-200 1 Trenton TN MMPHTNMA38Z  525E ONVOY, LLC - TN 468   2019-05-24   
731-200 2 Trenton TN   145J TERRA NOVA TELECOM INC. 468   2020-05-12   
731-200 3 Trenton TN MMPHTNMA38Z  525E ONVOY, LLC - TN 468   2021-05-22   
731-200 4 Trenton TN MMPHTNMA38Z  525E ONVOY, LLC - TN 468   2021-05-22   
731-200 5 Trenton TN MMPHTNMA38Z  525E ONVOY, LLC - TN 468   2021-05-22   
731-200 6 Trenton TN MMPHTNMA38Z  525E ONVOY, LLC - TN 468   2021-05-22   
731-200 8 Trenton TN MMPHTNMA94Z  073H TELNYX LLC 468   2019-06-02   
731-200 9 Trenton TN JCSNTNNGPS0  704C CHARTER FIBERLINK-TENNESSEE, LLC - TN 468   2019-10-10   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.