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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
443-306 3 Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-306 4 Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-306 5 Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-306 6 Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-306 7 Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-306 8 Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-306 9 Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-307 A Bel Air MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-307 0 Bel Air MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2024-11-22   
443-307 1 Bel Air MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-01-31   
443-307 2 Bel Air MD   145J TERRA NOVA TELECOM INC. 238   2025-04-29   
443-307 3 Bel Air MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-01-31   
443-307 4 Bel Air MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2025-11-06   
443-307 5 Bel Air MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-12-09   
443-307 6 Bel Air MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2004-10-03   
443-307 7 Bel Air MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2004-10-03   
443-307 8 Bel Air MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-307 9 Bel Air MD   145J TERRA NOVA TELECOM INC. 238   2022-11-07   
443-308 A Severn MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-308 0 Severn MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-308 1 Severn MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-308 2 Severn MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-308 3 Severn MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-14   
443-308 4 Severn MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-308 5 Severn MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-308 6 Severn MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2019-11-29   
443-308 7 Severn MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2017-10-01   
443-308 8 Severn MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-14   
443-308 9 Severn MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-309 A Elkton MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-309 0 Elkton MD BLTMMDCH40Z  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 238      
443-309 1 Elkton MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-309 2 Elkton MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-309 3 Elkton MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-309 4 Elkton MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-309 5 Elkton MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-309 6 Elkton MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-309 7 Elkton MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-309 8 Elkton MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-309 9 Elkton MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-310 A Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-312 A Brooklyn Park-Linthicum MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-312 0 Brooklyn Park-Linthicum MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2024-11-11   
443-312 1 Brooklyn Park-Linthicum MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2025-01-06   
443-312 2 Brooklyn Park-Linthicum MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-01-02   
443-312 3 Brooklyn Park-Linthicum MD   145J TERRA NOVA TELECOM INC. 238   2022-04-20   
443-312 5 Brooklyn Park-Linthicum MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-09-23   
443-312 6 Brooklyn Park-Linthicum MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2005-03-10   
443-312 7 Brooklyn Park-Linthicum MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-08-05   
443-312 8 Brooklyn Park-Linthicum MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2008-02-11   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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