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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-505 A Essex MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-505 0 Essex MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-505 1 Essex MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-505 2 Essex MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2011-12-24   
443-505 3 Essex MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2014-03-20   
443-505 4 Essex MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-505 5 Essex MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-505 6 Essex MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-10-18   
443-505 7 Essex MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-05-16   
443-505 8 Essex MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2014-09-21   
443-505 9 Essex MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2019-10-07   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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