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NPA: 410 [Rate centres in NPA 410] [Dial plan for NPA 410]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-963 1 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-963 2 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-963 3 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-963 4 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-963 5 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-963 6 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-963 7 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-963 8 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-963 9 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-964 A Columbia MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
410-965 A Woodlawn MD WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
410-966 A Woodlawn MD WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
410-967 A Towson MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-968 A Crisfield MD CRFDMDCRRS0  9212 VERIZON MARYLAND, INC. 242      
410-968 0 Crisfield MD   9212 VERIZON MARYLAND, INC. 242      
410-968 1 Crisfield MD   9212 VERIZON MARYLAND, INC. 242      
410-968 2 Crisfield MD   9212 VERIZON MARYLAND, INC. 242      
410-968 3 Crisfield MD   9212 VERIZON MARYLAND, INC. 242      
410-968 4 Crisfield MD   9212 VERIZON MARYLAND, INC. 242      
410-968 5 Crisfield MD   073H TELNYX LLC 242   2017-09-13   
410-968 6 Crisfield MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2004-04-03   
410-968 7 Crisfield MD   624H ONVOY SPECTRUM, LLC 242   2021-11-11   
410-968 8 Crisfield MD   624H ONVOY SPECTRUM, LLC 242   2021-02-24   
410-968 9 Crisfield MD   9212 VERIZON MARYLAND, INC. 242      
410-969 A Severn MD GLBRMDGLRP0  9212 VERIZON MARYLAND, INC. 238      
410-970 A Sykesville MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-970 0 Sykesville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-04-08   
410-970 1 Sykesville MD   145J TERRA NOVA TELECOM INC. 238   2021-01-28   
410-970 2 Sykesville MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-970 3 Sykesville MD   876D ONVOY, LLC - MD 238   2021-05-21   
410-970 4 Sykesville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-03-24   
410-970 5 Sykesville MD   4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2004-02-14   
410-970 6 Sykesville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-02-14   
410-970 7 Sykesville MD   9212 VERIZON MARYLAND, INC. 238   2004-06-20   
410-970 8 Sykesville MD   2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2003-12-25   
410-970 9 Sykesville MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-971 A Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-972 A Annapolis MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-972 0 Annapolis MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-972 1 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2004-03-03   
410-972 2 Annapolis MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-972 3 Annapolis MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-972 4 Annapolis MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-972 5 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-08-08   
410-972 6 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-08-08   
410-972 7 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-08-08   
410-972 8 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-08-08   
410-972 9 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-08-08   
410-973 A Berlin MD SLBRMDSBXWX  861F MCC TELEPHONY OF THE MID-ATLANTIC, LLC - MD 242      
410-973 0 Berlin MD   876D ONVOY, LLC - MD 242   2024-05-20   

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

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