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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
443-684 1 Prince Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-01-16   
443-684 2 Prince Frederick MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
443-684 3 Prince Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-04-02   
443-684 4 Prince Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2009-02-02   
443-684 5 Prince Frederick MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-07-02   
443-684 6 Prince Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-06-27   
443-684 7 Prince Frederick MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-09-04   
443-684 8 Prince Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2009-08-01   
443-684 9 Prince Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-02-03   
443-685 A Severn MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-685 0 Severn MD   829J PAETEC ITEL, LLC 238      
443-685 1 Severn MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2021-12-24   
443-685 2 Severn MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-11-11   
443-685 3 Severn MD   318J COMCAST IP PHONE, LLC 238   2014-05-19   
443-685 4 Severn MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-11-17   
443-685 5 Severn MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-11-17   
443-685 6 Severn MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-04-22   
443-685 7 Severn MD   515J IP HORIZON LLC 238   2016-10-14   
443-685 8 Severn MD   5562 METROPCS, INC. 238   2016-12-22   
443-685 9 Severn MD   829J PAETEC ITEL, LLC 238      
443-686 A Fallston MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-686 0 Fallston MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-11-02   
443-686 1 Fallston MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-11-02   
443-686 2 Fallston MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-09-21   
443-686 3 Fallston MD   420C ARMSTRONG TELECOMMUNICATIONS, INC. - MD 238   2008-09-08   
443-686 4 Fallston MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-07-30   
443-686 5 Fallston MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2026-02-16   
443-686 6 Fallston MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-06-26   
443-686 7 Fallston MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2009-03-02   
443-686 8 Fallston MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-25   
443-686 9 Fallston MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-687 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-687 0 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2009-11-06   
443-687 1 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2010-05-31   
443-687 2 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2010-05-31   
443-687 3 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2010-05-31   
443-687 4 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2010-05-31   
443-687 5 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2010-05-31   
443-687 6 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-07-03   
443-687 7 Baltimore MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-06-26   
443-687 8 Baltimore MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-06-26   
443-687 9 Baltimore MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-06-26   
443-688 A Severn MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-688 0 Severn MD   829J PAETEC ITEL, LLC 238      
443-688 1 Severn MD   829J PAETEC ITEL, LLC 238      
443-688 2 Severn MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-05-15   
443-688 3 Severn MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-05-15   
443-688 4 Severn MD   145J TERRA NOVA TELECOM INC. 238   2024-02-15   
443-688 5 Severn MD   829J PAETEC ITEL, LLC 238      
443-688 6 Severn MD   318J COMCAST IP PHONE, LLC 238   2006-10-22   

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

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