Local Calling Guide

Area code/prefix search

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Waterloo (Washington DC LATA), MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-264 A LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-264 0   9212 VERIZON MARYLAND, INC. 236      
410-264 1   568G PEERLESS NETWORK OF MARYLAND, LLC 236   2019-03-06   
410-264 2   2593 CORE COMMUNICATIONS, INC. - MD 236   2019-04-30   
410-264 3   9212 VERIZON MARYLAND, INC. 236      
410-264 4   9212 VERIZON MARYLAND, INC. 236      
410-264 5   9212 VERIZON MARYLAND, INC. 236      
410-264 6   2593 CORE COMMUNICATIONS, INC. - MD 236   2019-04-30   
410-264 7   9212 VERIZON MARYLAND, INC. 236      
410-264 8   9212 VERIZON MARYLAND, INC. 236      
410-264 9   9212 VERIZON MARYLAND, INC. 236      
410-416 A LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-509 A CHCHMDBEPS0  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236      
410-606 A MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
410-619 A LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-705 A   071F BANDWIDTH.COM CLEC, LLC - MD 236      
410-705 0   071F BANDWIDTH.COM CLEC, LLC - MD 236   2014-10-20   
410-705 1   281E YMAX COMMUNICATIONS CORP. - MD 236   2008-05-26   
410-705 3   281E YMAX COMMUNICATIONS CORP. - MD 236   2008-05-26   
410-705 4   071F BANDWIDTH.COM CLEC, LLC - MD 236   2015-02-13   
410-705 5   071F BANDWIDTH.COM CLEC, LLC - MD 236   2015-07-06   
410-705 6   071F BANDWIDTH.COM CLEC, LLC - MD 236   2007-10-22   
410-705 8   281E YMAX COMMUNICATIONS CORP. - MD 236   2007-07-28   
410-705 9   082H LOCAL ACCESS LLC - MD 236   2015-03-21   
410-722 A MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
410-724 A LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-724 0   9212 VERIZON MARYLAND, INC. 236      
410-724 2   9212 VERIZON MARYLAND, INC. 236      
410-724 3   9212 VERIZON MARYLAND, INC. 236      
410-724 4   9212 VERIZON MARYLAND, INC. 236      
410-724 5   9212 VERIZON MARYLAND, INC. 236      
410-724 6   9212 VERIZON MARYLAND, INC. 236      
410-724 7   9212 VERIZON MARYLAND, INC. 236      
410-724 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2006-09-21   
410-724 9   9212 VERIZON MARYLAND, INC. 236      
410-738 A MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
410-791 A MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
410-792 A LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-797 A LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-813 A MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
410-815 A MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
410-824 A LARLMDCCDC0  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
410-824 1   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-09-03   
410-824 2   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236   2006-10-12   
410-824 3   2593 CORE COMMUNICATIONS, INC. - MD 236   2019-04-30   
410-824 4   281E YMAX COMMUNICATIONS CORP. - MD 236   2009-01-15   
410-824 5   7421 AT&T LOCAL 236   2009-07-16   
410-824 6   2593 CORE COMMUNICATIONS, INC. - MD 236   2019-04-30   
410-824 7   7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
410-824 8   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2012-01-10   

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Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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