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: 547

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-547 A Baltimore MD BLTMMDSNOMD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 238   2026-07-21   
667-547 1 Baltimore MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2026-08-08   
667-547 2 Baltimore MD   490J BOOST SUBSCRIBERCO L.L.C. 238   2026-08-13   
667-547 5 Baltimore MD BLTMMDSNOMD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 238   2026-07-21   
667-547 6 Baltimore MD   490J BOOST SUBSCRIBERCO L.L.C. 238   2026-09-21   
667-547 7 Baltimore MD BLTQMD019MD  490J BOOST SUBSCRIBERCO L.L.C. 238   2026-10-26   
667-547 8 Baltimore MD   876D ONVOY, LLC - MD 238   2026-07-22   
667-547 9 Baltimore MD   876D ONVOY, LLC - MD 238   2026-07-22   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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