Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 423 [Rate centres in NPA 423] [Dial plan for NPA 423]

NXX: 548

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-548 A Copper Basin TN DCTWTNABRS1  566D ETC COMMUNICATIONS, L.L.C. - TN 472      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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