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: 274

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
380-274 A Alton OH CLMDOH449MD  939H COMMIO, LLC 324   2024-05-09   
380-274 0 Alton OH   939H COMMIO, LLC 324   2024-05-09   
380-274 1 Alton OH   939H COMMIO, LLC 324   2024-05-09   
380-274 2 Alton OH   939H COMMIO, LLC 324   2024-05-09   
380-274 3 Alton OH   939H COMMIO, LLC 324   2024-05-09   
380-274 4 Alton OH   464C ONVOY, LLC - OH 324   2024-07-05   
380-274 8 Alton OH   464C ONVOY, LLC - OH 324   2024-06-07   
380-274 9 Alton OH   073H TELNYX LLC 324   2024-05-10   

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

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