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: 548

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-548 A Towson MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2026-07-23   
667-548 0 Towson MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2026-07-23   
667-548 1 Towson MD   876D ONVOY, LLC - MD 238   2026-09-17   
667-548 2 Towson MD   876D ONVOY, LLC - MD 238   2026-09-17   
667-548 6 Towson MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2026-10-01   
667-548 7 Towson MD   820C INTRADO COMMUNICATIONS, LLC 238   2026-10-10   
667-548 8 Towson MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2026-10-16   
667-548 9 Towson MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2026-10-01   

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

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