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: 541

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-541 A Glen Burnie MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-541 9 Glen Burnie MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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