Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 410 [Rate centres in NPA 410] [Dial plan for NPA 410]

NXX: 779

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-779 A Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
410-779 0 Baltimore MD   829J PAETEC ITEL, LLC 238      
410-779 1 Baltimore MD   829J PAETEC ITEL, LLC 238      
410-779 2 Baltimore MD   829J PAETEC ITEL, LLC 238      
410-779 3 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
410-779 4 Baltimore MD   829J PAETEC ITEL, LLC 238   2010-01-15   
410-779 5 Baltimore MD   829J PAETEC ITEL, LLC 238      
410-779 6 Baltimore MD   829J PAETEC ITEL, LLC 238      
410-779 7 Baltimore MD   829J PAETEC ITEL, LLC 238      
410-779 8 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2006-02-07   
410-779 9 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2010-03-29   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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