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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-323 A Sharptown MD SLBRMDSBX9Y  829J PAETEC ITEL, LLC 242   2025-04-01   
443-323 0 Sharptown MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2020-04-30   
443-323 1 Sharptown MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2020-07-04   
443-323 2 Sharptown MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2020-07-04   
443-323 3 Sharptown MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2006-07-31   
443-323 4 Sharptown MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-05-02   
443-323 5 Sharptown MD   145J TERRA NOVA TELECOM INC. 242   2024-02-15   
443-323 6 Sharptown MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-05-02   
443-323 7 Sharptown MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-06-17   
443-323 8 Sharptown MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-06-17   
443-323 9 Sharptown MD SLBRMDSBX9Y  829J PAETEC ITEL, LLC 242      
443-324 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-324 0 Baltimore MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-324 1 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-324 2 Baltimore MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-324 3 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-324 4 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-324 5 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-324 6 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-324 7 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-324 8 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-324 9 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-325 A Ellicott City MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2025-04-01   
443-325 0 Ellicott City MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-325 1 Ellicott City MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-325 2 Ellicott City MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2013-06-14   
443-325 3 Ellicott City MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2013-06-14   
443-325 4 Ellicott City MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2015-02-01   
443-325 5 Ellicott City MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2014-01-06   
443-325 6 Ellicott City MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2016-02-04   
443-325 7 Ellicott City MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-325 8 Ellicott City MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-325 9 Ellicott City MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-326 A Baltimore MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-327 A Aberdeen MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 236   2025-04-01   
443-327 0 Aberdeen MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 236      
443-327 1 Aberdeen MD PIVLMDPKXEX  829J PAETEC ITEL, LLC 236   2002-05-20   
443-327 2 Aberdeen MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-10-13   
443-327 3 Aberdeen MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-10-13   
443-327 4 Aberdeen MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-10-13   
443-327 5 Aberdeen MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-10-13   
443-327 6 Aberdeen MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 236   2006-09-18   
443-327 7 Aberdeen MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 236   2006-09-18   
443-327 8 Aberdeen MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 236   2005-07-25   
443-327 9 Aberdeen MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 236   2008-12-11   
443-328 A Sykesville MD PIVLMDPKXFX  829J PAETEC ITEL, LLC 238   2025-04-01   
443-328 0 Sykesville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-04-29   
443-328 1 Sykesville MD PIVLMDPKXFX  829J PAETEC ITEL, LLC 238      
443-328 2 Sykesville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
443-328 3 Sykesville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-22   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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