Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 330 [Rate centres in NPA 330] [Dial plan for NPA 330]

NXX: 921

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
330-921 A Columbiana OH YNTWOH78X7X  6529 T-MOBILE USA, INC. 322   2024-02-09   
330-921 0 Columbiana OH   464C ONVOY, LLC - OH 322   2019-05-23   
330-921 1 Columbiana OH   6529 T-MOBILE USA, INC. 322      
330-921 2 Columbiana OH   001F BANDWIDTH.COM CLEC, LLC - OH 322   2016-07-22   
330-921 3 Columbiana OH   464C ONVOY, LLC - OH 322   2019-05-23   
330-921 4 Columbiana OH   4863 LEVEL 3 COMMUNICATIONS, LLC - OH 322   2005-04-01   
330-921 5 Columbiana OH   6529 T-MOBILE USA, INC. 322   2006-08-04   
330-921 6 Columbiana OH   508J CENTURYLINK COMMUNICATIONS, LLC 322   2014-03-19   
330-921 7 Columbiana OH   6529 T-MOBILE USA, INC. 322   2012-06-15   
330-921 8 Columbiana OH   6529 T-MOBILE USA, INC. 322   2004-12-24   
330-921 9 Columbiana OH   6529 T-MOBILE USA, INC. 322      

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

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