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: 484

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-484 A Westminster MD BLTQMD019MD  490J DISH WIRELESS, LLC 238   2024-07-12   
667-484 0 Westminster MD   490J DISH WIRELESS, LLC 238   2024-07-12   
667-484 1 Westminster MD   490J DISH WIRELESS, LLC 238   2024-07-12   
667-484 2 Westminster MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2026-02-05   
667-484 6 Westminster MD   876D ONVOY, LLC - MD 238   2026-01-11   
667-484 7 Westminster MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-01-14   
667-484 8 Westminster MD   876D ONVOY, LLC - MD 238   2025-11-28   
667-484 9 Westminster MD   876D ONVOY, LLC - MD 238   2025-04-06   

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

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