Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 731 [Rate centres in NPA 731] [Dial plan for NPA 731]

NXX: 312

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
731-312 A Cedar Grove TN MMPHTNMA38Z  525E ONVOY, LLC - TN 468   2024-01-15   
731-312 0 Cedar Grove TN   525E ONVOY, LLC - TN 468   2016-05-19   
731-312 1 Cedar Grove TN   525E ONVOY, LLC - TN 468   2016-05-19   
731-312 2 Cedar Grove TN   525E ONVOY, LLC - TN 468   2016-08-22   
731-312 3 Cedar Grove TN   073H TELNYX LLC 468   2019-06-02   
731-312 4 Cedar Grove TN   525E ONVOY, LLC - TN 468   2021-05-22   
731-312 5 Cedar Grove TN   704C CHARTER FIBERLINK-TENNESSEE, LLC - TN 468   2025-03-09   
731-312 6 Cedar Grove TN   525E ONVOY, LLC - TN 468   2023-02-12   
731-312 7 Cedar Grove TN   525E ONVOY, LLC - TN 468   2018-12-15   
731-312 8 Cedar Grove TN   525E ONVOY, LLC - TN 468   2018-12-15   
731-312 9 Cedar Grove TN   276F PEERLESS NETWORK OF TENNESSEE, LLC - TN 468   2018-09-30   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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