Local Calling Guide

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Baltimore, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-448 4 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
410-448 5 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
410-448 6 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
410-448 7 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
410-448 8 HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2005-09-26   
410-448 9 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
410-450 A BLTMMDCH1DD  9212 VERIZON MARYLAND, INC. 238      
410-450 0 BLTMMDCH1DD  9212 VERIZON MARYLAND, INC. 238      
410-450 1 BLTMMDCH1DD  9212 VERIZON MARYLAND, INC. 238      
410-450 2 BLTMMDCH1DD  9212 VERIZON MARYLAND, INC. 238      
410-450 3 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-09-28   
410-450 4 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-08-12   
410-450 5 BLTMMDCH1DD  9212 VERIZON MARYLAND, INC. 238      
410-450 6 BLTMMDCH1DD  9212 VERIZON MARYLAND, INC. 238      
410-450 7 BLTMMDCH1DD  9212 VERIZON MARYLAND, INC. 238      
410-450 8 BLTMMDCH1DD  9212 VERIZON MARYLAND, INC. 238      
410-450 9 BLTMMDCH1DD  9212 VERIZON MARYLAND, INC. 238      
410-454 A BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-456 A BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
410-458 A BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
410-462 A BLTMMDMDDS0  9212 VERIZON MARYLAND, INC. 238      
410-464 A BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238      
410-464 0 BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238      
410-464 1 BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238      
410-464 2 BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238      
410-464 3 BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238      
410-464 4 BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238      
410-464 5 BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238      
410-464 6 BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238      
410-464 7 HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2005-02-21   
410-464 8 HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2005-02-21   
410-464 9 BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238      
410-466 A BLTMMDLBDS0  9212 VERIZON MARYLAND, INC. 238      
410-467 A BLTMMDUVDS0  9212 VERIZON MARYLAND, INC. 238      
410-468 A BLTMMDCHDS3  9212 VERIZON MARYLAND, INC. 238      
410-469 A ARBTMDARDS0  9212 VERIZON MARYLAND, INC. 238      
410-469 0 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-04-01   
410-469 1 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-14   
410-469 2 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
410-469 3 ARBTMDARDS0  9212 VERIZON MARYLAND, INC. 238      
410-469 4 ARBTMDARDS0  9212 VERIZON MARYLAND, INC. 238      
410-469 5 ARBTMDARDS0  9212 VERIZON MARYLAND, INC. 238      
410-469 6 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2014-07-20   
410-469 7 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2014-07-20   
410-469 8 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2015-02-23   
410-469 9 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2015-03-20   
410-470 A BLTMMDCHDS3  9212 VERIZON MARYLAND, INC. 238      
410-470 0 BLTMMDCHDS3  9212 VERIZON MARYLAND, INC. 238   2005-08-19   
410-470 1 BLTMMDCHDS3  9212 VERIZON MARYLAND, INC. 238   2005-08-19   
410-470 2 BLTMMDCHDS3  9212 VERIZON MARYLAND, INC. 238   2005-08-19   

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

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