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: 507

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-507 A Severn MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-05-11   
667-507 8 Severn MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-05-11   
667-507 9 Severn MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-05-11   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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