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: 931 [Rate centres in NPA 931] [Dial plan for NPA 931]

NXX: 904

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
931-904 A McEwen TN NSVLTNMT83Z  525E ONVOY, LLC - TN 470      
931-904 0 McEwen TN   073H TELNYX LLC 470   2021-07-29   
931-904 1 McEwen TN   114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 470   2021-10-27   
931-904 3 McEwen TN   525E ONVOY, LLC - TN 470   2021-07-10   
931-904 4 McEwen TN   525E ONVOY, LLC - TN 470   2021-07-10   
931-904 5 McEwen TN   792K CHARTER IP ENABLED SERVICES, LLC 470   2021-03-26   
931-904 7 McEwen TN   525E ONVOY, LLC - TN 470   2018-09-05   
931-904 8 McEwen TN   525E ONVOY, LLC - TN 470   2018-09-05   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.