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: 406

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-406 A Essex MD BLTOMDKHDS0  7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238      
410-406 0 Essex MD BLTMMDCH08Z  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2003-11-08   
410-406 1 Essex MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-08   
410-406 2 Essex MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-04-19   
410-406 3 Essex MD BLTMMDDNDS2  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2006-06-01   
410-406 4 Essex MD BLTQMD012MD  964H BARR TELL USA, INC. 238   2016-12-17   
410-406 5 Essex MD BLTMMD91DS1  2593 CORE COMMUNICATIONS, INC. - MD 238   2004-03-29   
410-406 6 Essex MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2017-06-02   
410-406 7 Essex MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2004-11-27   
410-406 8 Essex MD BLTMMDCHAMD  1958 ATX TELECOMMUNICATIONS SERVICES, LTD 238   2004-03-27   
410-406 9 Essex MD BLTOMDKHDS0  7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238      

Last updated: Tue, 04 May 2021 15:04:27 UTC

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