Local Calling Guide

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NPA: 234 [Rate centres in NPA 234] [Dial plan for NPA 234]

NXX: 421

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
234-421 A Girard OH YNTWOH02ZMD  7421 AT&T - LOCAL 322      
234-421 0 Girard OH YNTWOH78MMD  024E ARMSTRONG TELECOMMUNICATIONS, INC. - OH 322   2007-11-02   
234-421 1 Girard OH YNTWOH79FMD  001F BANDWIDTH.COM CLEC, LLC - OH 322   2009-01-04   
234-421 2 Girard OH YNTWOH79FMD  001F BANDWIDTH.COM CLEC, LLC - OH 322   2010-02-19   
234-421 3 Girard OH YNTWOH79FMD  001F BANDWIDTH.COM CLEC, LLC - OH 322   2010-09-25   
234-421 4 Girard OH YNTWOHHD0MD  4863 LEVEL 3 COMMUNICATIONS, LLC - OH 322   2005-04-01   
234-421 5 Girard OH YNTWOH78XMX  793K TWC IP ENABLED SERVICES, LLC 322   2007-02-13   
234-421 6 Girard OH YNTWOHHD0MD  4863 LEVEL 3 COMMUNICATIONS, LLC - OH 322   2010-11-19   
234-421 7 Girard OH YNTWOHHD0MD  4863 LEVEL 3 COMMUNICATIONS, LLC - OH 322   2011-04-01   
234-421 9 Girard OH YNTWOH02ZMD  7421 AT&T - LOCAL 322   2004-08-09   

Last updated: Sat, 04 Jul 2026 13:07:56 UTC

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