Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

NXX: 706

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-706 A Crisfield MD SLBRMDSBDC0  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 242      
443-706 0 Crisfield MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-06-17   
443-706 1 Crisfield MD   876D ONVOY, LLC - MD 242   2021-04-29   
443-706 2 Crisfield MD   7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 242      
443-706 3 Crisfield MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2009-03-02   
443-706 4 Crisfield MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-06-17   
443-706 5 Crisfield MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-06-17   
443-706 6 Crisfield MD   145J TERRA NOVA TELECOM INC. 242   2021-11-01   
443-706 7 Crisfield MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 242   2016-10-10   
443-706 8 Crisfield MD   876D ONVOY, LLC - MD 242   2017-04-13   
443-706 9 Crisfield MD   876D ONVOY, LLC - MD 242   2021-04-29   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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