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: 686

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-686 A Fallston MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-686 0 Fallston MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-11-02   
443-686 1 Fallston MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-11-02   
443-686 2 Fallston MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-09-21   
443-686 3 Fallston MD BLTMMDCH47Z  420C ARMSTRONG TELECOMMUNICATIONS, INC. - MD 238   2008-09-08   
443-686 4 Fallston MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-07-30   
443-686 6 Fallston MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-06-26   
443-686 7 Fallston MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2009-03-02   
443-686 8 Fallston MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-25   
443-686 9 Fallston MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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