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: 576

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-576 A Randallstown MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-576 0 Randallstown MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-576 1 Randallstown MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-576 2 Randallstown MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-14   
443-576 3 Randallstown MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-576 4 Randallstown MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-576 5 Randallstown MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-14   
443-576 6 Randallstown MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238   2019-06-26   
443-576 7 Randallstown MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238   2019-07-31   
443-576 8 Randallstown MD BLTQMD010MD  082H LOCAL ACCESS LLC - MD 238   2016-01-04   
443-576 9 Randallstown MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-25   

Last updated: Fri, 13 May 2022 22:16:13 UTC

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