Local Calling Guide

Area code/prefix search

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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

NXX: 679

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-679 A Severn MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-679 0 Severn MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-04-22   
443-679 1 Severn MD CLMAMDJTDS0  2589 US LEC OF MARYLAND, INC. 238   2002-04-22   
443-679 2 Severn MD BLTMMDCHFMD  5562 METRO PCS, INC. 238   2018-02-08   
443-679 3 Severn MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-14   
443-679 4 Severn MD BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2016-12-15   
443-679 5 Severn MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-06-18   
443-679 6 Severn MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-05-31   
443-679 7 Severn MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2015-06-11   
443-679 8 Severn MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2014-06-04   
443-679 9 Severn MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      

Last updated: Tue, 04 May 2021 15:04:27 UTC

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