Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 220 [Rate centres in NPA 220] [Dial plan for NPA 220]

NXX: 333

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
220-333 A Roseville OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324      
220-333 0 Roseville OH   624H ONVOY SPECTRUM, LLC 324   2024-08-02   
220-333 3 Roseville OH   464C ONVOY, LLC - OH 324   2017-10-30   
220-333 4 Roseville OH   464C ONVOY, LLC - OH 324   2021-01-31   
220-333 5 Roseville OH   464C ONVOY, LLC - OH 324   2021-01-31   
220-333 8 Roseville OH   464C ONVOY, LLC - OH 324   2023-04-14   

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

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