Local Calling Guide

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Baltimore, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
443-869 6 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2009-09-10   
443-869 7 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2024-10-23   
443-869 8 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-08-26   
443-869 9 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-08-26   
443-872 A PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2025-04-01   
443-872 0 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-872 1 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-02-04   
443-872 2 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2003-09-22   
443-872 3 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2003-09-22   
443-872 4 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2003-09-22   
443-872 5 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2003-09-22   
443-872 6 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2003-06-26   
443-872 7 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2003-06-26   
443-872 8 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2003-06-26   
443-872 9 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-06-16   
443-873 A BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-873 0 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-14   
443-873 1 PIVLMDPKXEX  829J PAETEC ITEL, LLC 238   2010-06-03   
443-873 2 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2010-04-16   
443-873 3 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2013-04-03   
443-873 4 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2013-09-10   
443-873 5 PIVLMDPKXEX  829J PAETEC ITEL, LLC 238   2010-06-03   
443-873 6 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2013-08-07   
443-873 7 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2013-08-07   
443-873 8 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2013-08-07   
443-873 9 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2013-08-07   
443-874 A PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2025-04-01   
443-874 0 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-03-22   
443-874 1 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-08-03   
443-874 2 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 3 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 4 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 5 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 6 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 7 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 8 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 9   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-882 A BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-882 0 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 1 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 2 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 3 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 4 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 5 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 6 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 7 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 8 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 9 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-884 A PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2025-04-01   
443-884 0 PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      

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Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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