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Arbutus, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
443-443 A BLTQMD013MD  939H COMMIO, LLC 238   2024-01-22   
443-443 0 BLTQMD013MD  939H COMMIO, LLC 238   2024-01-22   
443-443 1 BLTQMD013MD  939H COMMIO, LLC 238   2024-01-22   
443-443 2 BLTQMD013MD  939H COMMIO, LLC 238   2024-01-22   
443-443 3 BLTQMD013MD  939H COMMIO, LLC 238   2024-01-22   
443-443 4 BLTQMD013MD  939H COMMIO, LLC 238   2024-01-22   
443-443 5 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-03-08   
443-443 6 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-04-13   
443-443 7 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2026-01-12   
443-443 8 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-07-15   
443-443 9 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-07-15   
443-543 A ARBTMDARDS0  9212 VERIZON MARYLAND, INC. 238      
443-543 0 ARBTMDARDS0  9212 VERIZON MARYLAND, INC. 238      
443-543 1 ARBTMDARDS0  9212 VERIZON MARYLAND, INC. 238      
443-543 2 ARBTMDARDS0  9212 VERIZON MARYLAND, INC. 238      
443-543 3 ARBTMDARDS0  9212 VERIZON MARYLAND, INC. 238      
443-543 4 BLTQMD013MD  939H COMMIO, LLC 238   2021-07-05   
443-543 5 ARBTMDARDS0  9212 VERIZON MARYLAND, INC. 238      
443-543 6 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-07-02   
443-543 7 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-11-26   
443-543 8 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-10-06   
443-543 9 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-10-06   
443-568 A BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-568 0 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-568 1 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-568 2 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-568 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-07   
443-568 4 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-568 5 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-568 6 BLTQMD013MD  939H COMMIO, LLC 238   2021-06-12   
443-568 7 BLTMMDCHXVX  321J HD CARRIER LLC 238   2020-05-01   
443-568 8 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2016-09-08   
443-568 9 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-575 A PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2025-04-01   
443-575 0 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-575 1 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-02-24   
443-575 2 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-575 3 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-02-24   
443-575 4 PIVLMDPKXEX  829J PAETEC ITEL, LLC 238   2006-11-09   
443-575 5 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-575 6 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-04-10   
443-575 7 PIVLMDPKXFX  829J PAETEC ITEL, LLC 238   2011-12-20   
443-575 8 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-02-24   
443-575 9 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-05-23   
443-701 A BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-701 0 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-701 1 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-701 2 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-701 3 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-01-08   
443-701 4 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-08-26   

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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