Local Calling Guide

Area code/prefix search

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   829J PAETEC ITEL, LLC 238   2025-04-01   
443-574 0 Ellicott City MD   829J PAETEC ITEL, LLC 238      
443-574 1 Ellicott City MD   829J PAETEC ITEL, LLC 238      
443-574 2 Ellicott City MD   829J PAETEC ITEL, LLC 238      
443-574 3 Ellicott City MD   829J PAETEC ITEL, LLC 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   829J PAETEC ITEL, LLC 238   2003-05-25   
443-574 9 Ellicott City MD   829J PAETEC ITEL, LLC 238      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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