Local Calling Guide

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

NXX: 364

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-364 A Ellicott City MD CLMAMDNIDS1  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-364 0 Ellicott City MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2018-08-27   
443-364 1 Ellicott City MD BLTMMDCHFMD  5562 METROPCS, INC. 238   2018-04-29   
443-364 2 Ellicott City MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2007-05-23   
443-364 3 Ellicott City MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-02-29   
443-364 4 Ellicott City MD BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2008-07-26   
443-364 5 Ellicott City MD CLMAMDNIDS1  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-364 6 Ellicott City MD BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2009-02-11   
443-364 7 Ellicott City MD BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2009-02-11   
443-364 8 Ellicott City MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-364 9 Ellicott City MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2007-07-27   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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