Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 223 [Rate centres in NPA 223] [Dial plan for NPA 223]

NXX: 305

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
223-305 A Delta PA HRBGPAHAXFX  732J NUSO, LLC 226      
223-305 1 Delta PA   732J NUSO, LLC 226   2022-12-08   
223-305 2 Delta PA   547E ONVOY, LLC - PA 226   2022-12-09   
223-305 3 Delta PA   547E ONVOY, LLC - PA 226   2022-12-09   
223-305 4 Delta PA   547E ONVOY, LLC - PA 226   2023-02-19   
223-305 5 Delta PA   547E ONVOY, LLC - PA 226   2023-03-23   
223-305 6 Delta PA   547E ONVOY, LLC - PA 226   2023-07-06   
223-305 8 Delta PA   547E ONVOY, LLC - PA 226   2023-11-04   
223-305 9 Delta PA   547E ONVOY, LLC - PA 226   2023-11-04   

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

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