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: 221

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-221 A Salisbury MD SLBRMD902MD  073H TELNYX LLC 242      
667-221 0 Salisbury MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2017-10-09   
667-221 1 Salisbury MD   073H TELNYX LLC 242   2017-07-29   
667-221 2 Salisbury MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2017-10-09   
667-221 3 Salisbury MD   876D ONVOY, LLC - MD 242   2024-07-12   
667-221 4 Salisbury MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2020-02-26   
667-221 5 Salisbury MD   318J COMCAST IP PHONE, LLC 242   2021-03-02   
667-221 6 Salisbury MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-05-02   
667-221 8 Salisbury MD   551G NUSO, LLC 242   2018-10-14   
667-221 9 Salisbury MD   551G NUSO, LLC 242   2018-10-14   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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