Local Calling Guide

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

NXX: 973

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-973 A Ellicott City MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-973 0 Ellicott City MD BLTMMDSNDS5  4773 XO MARYLAND, LLC 238   2010-04-04   
443-973 1 Ellicott City MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2019-10-18   
443-973 2 Ellicott City MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-03-21   
443-973 3 Ellicott City MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-973 4 Ellicott City MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-09-05   
443-973 5 Ellicott City MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-10-17   
443-973 6 Ellicott City MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-06-02   
443-973 7 Ellicott City MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-973 8 Ellicott City MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-973 9 Ellicott City MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2001-11-19   

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

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