Local Calling Guide

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West River, MD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-741 A NRBHMDNE741  9212 VERIZON MARYLAND, INC. 238      
410-741 0 NRBHMDNE741  9212 VERIZON MARYLAND, INC. 238      
410-741 1 NRBHMDNE741  9212 VERIZON MARYLAND, INC. 238      
410-741 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-04-02   
410-741 3 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2004-07-11   
410-741 4 BLTMMDDNDS2  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2013-01-11   
410-741 5 NRBHMDNEDS0  9212 VERIZON MARYLAND, INC. 238      
410-741 6 NRBHMDNE741  9212 VERIZON MARYLAND, INC. 238      
410-741 7 BLTMMDCH25Z  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2015-06-20   
410-741 8 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238   2006-07-31   
410-741 9 NRBHMDNE741  9212 VERIZON MARYLAND, INC. 238      
410-798 A MAYOMDMYRS1  9212 VERIZON MARYLAND, INC. 238      
410-867 A GLVLMDGLRS1  9212 VERIZON MARYLAND, INC. 238      
410-867 0 GLVLMDGLRS1  9212 VERIZON MARYLAND, INC. 238      
410-867 1 GLVLMDGLRS1  9212 VERIZON MARYLAND, INC. 238      
410-867 2 GLVLMDGLRS1  9212 VERIZON MARYLAND, INC. 238      
410-867 3 GLVLMDGLRS1  9212 VERIZON MARYLAND, INC. 238      
410-867 4 GLVLMDGLRS1  9212 VERIZON MARYLAND, INC. 238      
410-867 5 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2006-07-01   
410-867 6 GLVLMDGLRS1  9212 VERIZON MARYLAND, INC. 238      
410-867 7 GLVLMDGLRS1  9212 VERIZON MARYLAND, INC. 238      
410-867 8 GLVLMDGLRS1  9212 VERIZON MARYLAND, INC. 238      
410-867 9 GLVLMDGLRS1  9212 VERIZON MARYLAND, INC. 238      
443-203 A MAYOMDMYRS1  9212 VERIZON MARYLAND, INC. 238      
443-203 0 MAYOMDMYRS1  9212 VERIZON MARYLAND, INC. 238      
443-203 1 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-04-03   
443-203 2 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2008-06-20   
443-203 3 BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-07-16   
443-203 4 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-08-20   
443-203 5 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-31   
443-203 6 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2005-03-10   
443-203 7 BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-203 8 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-06-26   
443-203 9 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-294 A BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 238      
443-294 2 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-02-27   
443-294 3 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-07-02   
443-294 4 BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 238      
443-294 5 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2021-03-25   
443-294 6 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2013-07-19   
443-294 7 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
443-294 8 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-294 9   515J IP HORIZON LLC 238   2015-03-23   
443-607 A HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-607 0 HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-607 1 CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238   2003-03-02   
443-607 2 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-06-05   
443-607 3 PIVLMDPKQMD  9170 BROADVIEW NETWORKS, INC. - MD 238   2014-07-21   
443-607 4 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2013-08-09   
443-607 5 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-607 6 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-10-11   
443-607 7 BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238   2012-03-26   
443-607 8 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2006-12-14   
443-607 9   515J IP HORIZON LLC 238   2016-01-04   
443-659 A BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-237 A BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
667-237 0   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-08-02   
667-237 1   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-08-02   
667-237 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-08-02   
667-237 3 BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-02   
667-237 4 BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-02   
667-237 6 BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-02   
667-237 7 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-11-30   
667-237 8 BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-02   
667-237 9 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-11-30   
667-427 A BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-427 0 BLTQMD019MD  490J DISH WIRELESS, LLC 238   2023-06-30   
667-427 1 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-08-10   
667-427 2 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-08-10   
667-427 3 BLTQMD01BMD  516J TON80 COMMUNICATIONS, LLC 238   2022-03-21   
667-427 4 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-05-23   
667-427 5 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-08-10   
667-427 6 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-05-22   
667-427 7 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-01-28   
667-427 8 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-01-28   
667-427 9 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2022-01-28   
667-666 A BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-666 0 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-06-13   
667-666 1 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-06-13   
667-666 2 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-08-05   
667-666 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-08-05   
667-666 4 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-05-31   
667-666 5 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2021-03-25   
667-666 6 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-06-02   
667-666 7   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-02   
667-666 8 BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-26   
667-666 9   515J IP HORIZON LLC 238   2016-10-14   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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