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Towson, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-832 8 TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-832 9 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2024-10-23   
410-839 A HNVAMDAE3MD  6630 SPOK, INC. 238      
410-842 A BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-842 0 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-842 1 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-842 2 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-842 3 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-06-01   
410-842 4 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-842 5 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-06-01   
410-842 6 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-842 7 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-06-01   
410-842 8 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-842 9 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-847 A TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-847 0 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2024-10-23   
410-847 1 TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-847 2 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-02-29   
410-847 3 TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-847 4 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2016-12-12   
410-847 5 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2016-12-12   
410-847 6 TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-847 7 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2019-03-25   
410-847 8   145J TERRA NOVA TELECOM INC. 238   2025-07-25   
410-847 9 TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-851 A BRKLMDBKRP0  9212 VERIZON MARYLAND, INC. 238      
410-853 A TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-853 0 TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-853 1 TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-853 2 TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-853 3 TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-853 4 TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-853 5 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-853 6 TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-853 7 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2005-03-10   
410-853 8 TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-853 9 TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-887 A TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-890 A HNVAMDAE3MD  6630 SPOK, INC. 238      
410-894 A HNVAMDAE3MD  6630 SPOK, INC. 238      
410-899 A HNVAMDAE3MD  6630 SPOK, INC. 238      
410-938 A TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-938 0   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2025-06-23   
410-938 1 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2018-12-07   
410-938 2 TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-938 3 TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-938 4 TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-938 5 TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-938 6 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2019-01-10   
410-938 7 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2019-01-10   

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Last updated: Sat, 02 May 2026 12:20:53 UTC

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