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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
443-371 7 Bel Air MD   318J COMCAST IP PHONE, LLC 238   2007-09-20   
443-371 8 Bel Air MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2025-04-08   
443-371 9 Bel Air MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-01   
443-372 A Edgewood MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-372 0 Edgewood MD   829J PAETEC ITEL, LLC 238      
443-372 1 Edgewood MD   829J PAETEC ITEL, LLC 238      
443-372 2 Edgewood MD   829J PAETEC ITEL, LLC 238      
443-372 3 Edgewood MD   829J PAETEC ITEL, LLC 238      
443-372 4 Edgewood MD   145J TERRA NOVA TELECOM INC. 238   2021-07-17   
443-372 5 Edgewood MD   318J COMCAST IP PHONE, LLC 238   2008-06-03   
443-372 6 Edgewood MD   829J PAETEC ITEL, LLC 238   2003-12-01   
443-372 7 Edgewood MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2012-09-09   
443-372 8 Edgewood MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2012-09-09   
443-372 9 Edgewood MD   829J PAETEC ITEL, LLC 238      
443-373 A Ocean City MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-373 0 Ocean City MD   876D ONVOY, LLC - MD 242   2017-04-14   
443-373 1 Ocean City MD   5562 METROPCS, INC. 242      
443-373 2 Ocean City MD   318J COMCAST IP PHONE, LLC 242   2016-12-04   
443-373 3 Ocean City MD   5562 METROPCS, INC. 242      
443-373 4 Ocean City MD   318J COMCAST IP PHONE, LLC 242   2019-11-26   
443-373 5 Ocean City MD   876D ONVOY, LLC - MD 242   2024-07-15   
443-373 6 Ocean City MD   145J TERRA NOVA TELECOM INC. 242   2022-11-07   
443-373 7 Ocean City MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242   2004-11-01   
443-373 8 Ocean City MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242   2004-10-13   
443-373 9 Ocean City MD   5562 METROPCS, INC. 242      
443-374 A Aberdeen MD   829J PAETEC ITEL, LLC 236   2025-04-01   
443-374 0 Aberdeen MD   829J PAETEC ITEL, LLC 236      
443-374 1 Aberdeen MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2020-06-24   
443-374 2 Aberdeen MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2020-06-24   
443-374 3 Aberdeen MD   829J PAETEC ITEL, LLC 236      
443-374 4 Aberdeen MD   829J PAETEC ITEL, LLC 236      
443-374 5 Aberdeen MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2020-06-24   
443-374 6 Aberdeen MD   829J PAETEC ITEL, LLC 236      
443-374 7 Aberdeen MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2011-08-08   
443-374 8 Aberdeen MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2011-08-08   
443-374 9 Aberdeen MD   829J PAETEC ITEL, LLC 236      
443-375 A Hampstead MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-375 0 Hampstead MD   5562 METROPCS, INC. 238      
443-375 1 Hampstead MD   5562 METROPCS, INC. 238      
443-375 2 Hampstead MD   5562 METROPCS, INC. 238      
443-375 3 Hampstead MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-09-04   
443-375 4 Hampstead MD   4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2004-02-14   
443-375 5 Hampstead MD   876D ONVOY, LLC - MD 238   2024-04-19   
443-375 6 Hampstead MD   5562 METROPCS, INC. 238      
443-375 7 Hampstead MD   5562 METROPCS, INC. 238      
443-375 8 Hampstead MD   5562 METROPCS, INC. 238      
443-375 9 Hampstead MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-376 A Dundalk MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-376 0 Dundalk MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-376 1 Dundalk MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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