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: 904

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-904 A Waterloo MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-904 0 Waterloo MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-23   
410-904 1 Waterloo MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-23   
410-904 2 Waterloo MD BLTMMDCH08Z  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2004-02-14   
410-904 3 Waterloo MD BLTMMD91DS1  2593 CORE COMMUNICATIONS, INC.- MD 238   2004-04-02   
410-904 4 Waterloo MD BLTMMDCHXMX  506J TWILIO INTERNATIONAL INC 238   2020-12-26   
410-904 5 Waterloo MD BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2015-03-18   
410-904 6 Waterloo MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-05-21   
410-904 7 Waterloo MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-904 8 Waterloo MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-23   
410-904 9 Waterloo MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      

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

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