Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 380 [Rate centres in NPA 380] [Dial plan for NPA 380]

NXX: 312

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
380-312 A Columbus OH   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 324   2026-04-28   
380-312 0 Columbus OH   464C ONVOY, LLC - OH 324   2026-04-29   
380-312 6 Columbus OH   7532 TELEPORT COMMUNICATIONS AMERICA, LLC - OH 324   2026-04-29   
380-312 7 Columbus OH   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 324   2026-04-28   
380-312 8 Columbus OH   464C ONVOY, LLC - OH 324   2026-04-29   
380-312 9 Columbus OH   464C ONVOY, LLC - OH 324   2026-04-29   

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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