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: 836

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-836 A Baltimore MD BLTMMDSNDS5  4773 XO MARYLAND, LLC 238      
443-836 0 Baltimore MD BLTMMDSNDS5  4773 XO MARYLAND, LLC 238      
443-836 2 Baltimore MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-12   
443-836 3 Baltimore MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-12   
443-836 4 Baltimore MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2018-12-13   
443-836 5 Baltimore MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2020-02-13   
443-836 6 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2017-12-05   
443-836 7 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2017-12-05   
443-836 8 Baltimore MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-19   
443-836 9 Baltimore MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-19   

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

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