Local Calling Guide

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

NXX: 766

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-766 A Columbia MD CLMAMDJTBMD  2589 US LEC OF MARYLAND, INC. 238      
443-766 0 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-12-14   
443-766 1 Columbia MD CLMAMDJTBMD  2589 US LEC OF MARYLAND, INC. 238   2005-07-09   
443-766 2 Columbia MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2016-08-03   
443-766 3 Columbia MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2016-08-03   
443-766 4 Columbia MD BLTMMDCHFMD  5562 METROPCS, INC. 238   2015-10-01   
443-766 5 Columbia MD BLTMMDCHFMD  5562 METROPCS, INC. 238   2015-09-03   
443-766 6 Columbia MD BLTMMDCHFMD  5562 METROPCS, INC. 238   2015-11-03   
443-766 7 Columbia MD CLMAMDJTBMD  2589 US LEC OF MARYLAND, INC. 238   2006-07-15   
443-766 8 Columbia MD BLTMMDCHFMD  5562 METROPCS, INC. 238   2015-10-30   
443-766 9 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2008-01-14   

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

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