Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

NXX: 574

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-574 A Ellicott City MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-574 0 Ellicott City MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-574 1 Ellicott City MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-574 2 Ellicott City MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-574 3 Ellicott City MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-574 4 Ellicott City MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-10-28   
443-574 5 Ellicott City MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-02-26   
443-574 6 Ellicott City MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-08-19   
443-574 7 Ellicott City MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-08-28   
443-574 8 Ellicott City MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238   2003-05-25   
443-574 9 Ellicott City MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      

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

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