Local Calling Guide

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Washington Zone 2, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
301-900 9   876D ONVOY, LLC - MD 236   2015-04-20   
301-906 A BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-907 A CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-907 0   9212 VERIZON MARYLAND, INC. 236      
301-907 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2018-02-05   
301-907 2   9212 VERIZON MARYLAND, INC. 236      
301-907 3   9212 VERIZON MARYLAND, INC. 236      
301-907 4   9212 VERIZON MARYLAND, INC. 236      
301-907 5   9212 VERIZON MARYLAND, INC. 236      
301-907 6   9212 VERIZON MARYLAND, INC. 236      
301-907 7   9212 VERIZON MARYLAND, INC. 236      
301-907 8   9212 VERIZON MARYLAND, INC. 236      
301-907 9   9212 VERIZON MARYLAND, INC. 236      
301-910 A BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-913 A CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-913 0   9212 VERIZON MARYLAND, INC. 236      
301-913 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2017-11-24   
301-913 2   9212 VERIZON MARYLAND, INC. 236      
301-913 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2017-11-24   
301-913 4   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2017-11-29   
301-913 5   9212 VERIZON MARYLAND, INC. 236      
301-913 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2017-11-24   
301-913 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2017-11-24   
301-913 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2017-11-24   
301-913 9   9212 VERIZON MARYLAND, INC. 236      
301-915 A LNHMMDADGT0  8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-915 0   8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-915 1   8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-915 2   8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-915 3   8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-915 4   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2006-06-05   
301-915 5   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2006-06-05   
301-915 6   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2006-06-05   
301-915 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2006-06-05   
301-915 8   8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-915 9   829J PAETEC ITEL, LLC 236   2004-03-27   
301-919 A BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-941 A CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-941 0   9212 VERIZON MARYLAND, INC. 236      
301-941 1   9212 VERIZON MARYLAND, INC. 236      
301-941 2   9212 VERIZON MARYLAND, INC. 236      
301-941 3   071F BANDWIDTH.COM CLEC, LLC - MD 236   2019-10-02   
301-941 4   071F BANDWIDTH.COM CLEC, LLC - MD 236   2019-05-06   
301-941 5   964H BARR TELL USA, INC. 236   2018-05-08   
301-941 6   7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2017-10-02   
301-941 7   071F BANDWIDTH.COM CLEC, LLC - MD 236   2018-10-19   
301-941 8   9212 VERIZON MARYLAND, INC. 236      
301-941 9   9212 VERIZON MARYLAND, INC. 236      
301-951 A CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-961 A CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-968 A WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-968 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-968 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-968 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-968 3   829J PAETEC ITEL, LLC 236   2009-06-24   
301-968 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-968 5   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-09-07   
301-968 6   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-10-17   
301-968 7   281E YMAX COMMUNICATIONS CORP. - MD 236   2010-09-01   
301-968 8   7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236   2010-07-22   
301-968 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-986 A CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      

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

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