Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 667 [Rate centres in NPA 667] [Dial plan for NPA 667]

NXX: 263

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-263 A Dundalk MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-263 0 Dundalk MD   939H COMMIO, LLC 238   2021-10-11   
667-263 1 Dundalk MD   939H COMMIO, LLC 238   2021-10-11   
667-263 2 Dundalk MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2025-01-04   
667-263 3 Dundalk MD   876D ONVOY, LLC - MD 238   2021-07-11   
667-263 4 Dundalk MD   876D ONVOY, LLC - MD 238   2021-07-11   
667-263 5 Dundalk MD   939H COMMIO, LLC 238   2021-10-11   
667-263 6 Dundalk MD   876D ONVOY, LLC - MD 238   2022-10-16   
667-263 7 Dundalk MD   624H ONVOY SPECTRUM, LLC 238   2021-05-22   
667-263 8 Dundalk MD   939H COMMIO, LLC 238   2021-10-11   
667-263 9 Dundalk MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-04-23   

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

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