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: 552

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-552 A Severna Park MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-08-22   
667-552 0 Severna Park MD   876D ONVOY, LLC - MD 238   2026-09-28   
667-552 1 Severna Park MD   876D ONVOY, LLC - MD 238   2026-09-28   
667-552 6 Severna Park MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-10-09   
667-552 7 Severna Park MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-10-09   
667-552 8 Severna Park MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-08-22   
667-552 9 Severna Park MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-08-22   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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