Local Calling Guide

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NPA: 410 [Rate centres in NPA 410] [Dial plan for NPA 410]

NXX: 774

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-774 A Crofton MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-774 0 Crofton MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-25   
410-774 1 Crofton MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-25   
410-774 2 Crofton MD BLTMMDCH08Z  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2004-02-14   
410-774 3 Crofton MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
410-774 4 Crofton MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-08-20   
410-774 5 Crofton MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-02-11   
410-774 6 Crofton MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
410-774 7 Crofton MD COTNMDCRDS0  9212 VERIZON MARYLAND, INC. 238   2005-10-15   
410-774 8 Crofton MD BLTMMDCHAMD  2217 ATX TELECOMMUNICATIONS SERVICES, LTD. - MD 238   2003-02-25   
410-774 9 Crofton MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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