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: 502

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-502 A Columbia MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-02-10   
667-502 0 Columbia MD   876D ONVOY, LLC - MD 238   2025-10-13   
667-502 2 Columbia MD   490J DISH WIRELESS, LLC 238   2025-08-25   
667-502 3 Columbia MD   490J DISH WIRELESS, LLC 238   2025-09-29   
667-502 4 Columbia MD   490J DISH WIRELESS, LLC 238   2025-10-27   
667-502 5 Columbia MD   876D ONVOY, LLC - MD 238   2025-03-02   
667-502 6 Columbia MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-02-10   
667-502 7 Columbia MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-02-10   
667-502 8 Columbia MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-02-10   
667-502 9 Columbia MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-02-10   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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