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: 508

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-508 A Woodlawn MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-06-13   
667-508 0 Woodlawn MD   876D ONVOY, LLC - MD 238   2025-07-20   
667-508 1 Woodlawn MD   876D ONVOY, LLC - MD 238   2025-09-06   
667-508 2 Woodlawn MD   876D ONVOY, LLC - MD 238   2025-10-12   
667-508 7 Woodlawn MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-06-13   
667-508 8 Woodlawn MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-06-13   
667-508 9 Woodlawn MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-06-13   

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

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