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Gaithersburg, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
301-820 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2012-02-23   
301-820 2   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2010-09-14   
301-820 3   829J PAETEC ITEL, LLC 236   2011-05-27   
301-820 4   7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-820 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-11-04   
301-820 6   7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-820 7   876D ONVOY, LLC - MD 236   2011-06-17   
301-820 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2012-02-23   
301-820 9   624H ONVOY SPECTRUM, LLC 236   2022-01-07   
301-869 A GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-916 A GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
301-926 A GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-944 A WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-944 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-944 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-944 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-944 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-05-30   
301-944 4   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-06-27   
301-944 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-944 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-944 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-944 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-944 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-947 A GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-956 A GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-956 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2007-08-18   
301-956 1   9212 VERIZON MARYLAND, INC. 236      
301-956 2   829J PAETEC ITEL, LLC 236   2009-02-12   
301-956 3   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2009-04-02   
301-956 4   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2009-05-02   
301-956 5   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2009-06-01   
301-956 6   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2009-02-02   
301-956 7   281E YMAX COMMUNICATIONS CORP. - MD 236   2011-03-15   
301-956 8   281E YMAX COMMUNICATIONS CORP. - MD 236   2011-03-15   
301-956 9   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2010-02-16   
301-963 A GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-972 A GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
301-977 A GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-987 A GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-990 A GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      

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Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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