Local Calling Guide

Area code/prefix search

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

NXX: 505

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-505 A Ellicott City MD CLMAMDOBDS0  9212 VERIZON MARYLAND, INC. 238      
410-505 0 Ellicott City MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2015-10-15   
410-505 1 Ellicott City MD BLTMMDCH08Z  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2004-02-14   
410-505 2 Ellicott City MD CLMAMDOBDS0  9212 VERIZON MARYLAND, INC. 238   2003-03-06   
410-505 3 Ellicott City MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-03-29   
410-505 4 Ellicott City MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-02-20   
410-505 5 Ellicott City MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2002-07-21   
410-505 6 Ellicott City MD CLMAMDOBDS0  9212 VERIZON MARYLAND, INC. 238      
410-505 7 Ellicott City MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2020-02-26   
410-505 8 Ellicott City MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2004-11-22   
410-505 9 Ellicott City MD BLTMMDCHAMD  1958 ATX TELECOMMUNICATIONS SERVICES, LTD. 238   2004-03-27   

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

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