Local Calling Guide

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Washington Zone 11, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-880 5   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-880 6   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-880 7   281E YMAX COMMUNICATIONS CORP. - MD 236   2008-08-31   
240-880 8   281E YMAX COMMUNICATIONS CORP. - MD 236   2008-08-31   
240-880 9   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-922 A ARTNVAARXBY  965H FRACTEL LLC 236      
240-922 2   965H FRACTEL LLC 236   2020-09-12   
301-230 A RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-231 A RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-231 0   9212 VERIZON MARYLAND, INC. 236      
301-231 1   876D ONVOY, LLC - MD 236   2014-09-01   
301-231 2   9212 VERIZON MARYLAND, INC. 236      
301-231 3   9212 VERIZON MARYLAND, INC. 236      
301-231 4   9212 VERIZON MARYLAND, INC. 236      
301-231 5   9212 VERIZON MARYLAND, INC. 236      
301-231 6   9212 VERIZON MARYLAND, INC. 236      
301-231 7   9212 VERIZON MARYLAND, INC. 236      
301-231 8   9212 VERIZON MARYLAND, INC. 236      
301-231 9   9212 VERIZON MARYLAND, INC. 236      
301-255 A RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-255 0   9212 VERIZON MARYLAND, INC. 236      
301-255 1   9212 VERIZON MARYLAND, INC. 236      
301-255 2   9212 VERIZON MARYLAND, INC. 236      
301-255 3   9212 VERIZON MARYLAND, INC. 236      
301-255 4   9212 VERIZON MARYLAND, INC. 236      
301-255 5   9212 VERIZON MARYLAND, INC. 236      
301-255 6   9212 VERIZON MARYLAND, INC. 236      
301-255 7   9212 VERIZON MARYLAND, INC. 236      
301-255 8   9212 VERIZON MARYLAND, INC. 236      
301-255 9   2593 CORE COMMUNICATIONS, INC. - MD 236   2018-10-24   
301-287 A WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-287 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-287 1   2593 CORE COMMUNICATIONS, INC. - MD 236   2018-10-24   
301-287 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-287 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-287 4   876D ONVOY, LLC - MD 236   2017-12-08   
301-287 5   876D ONVOY, LLC - MD 236   2017-12-08   
301-287 6   876D ONVOY, LLC - MD 236   2017-12-08   
301-287 7   2593 CORE COMMUNICATIONS, INC. - MD 236   2019-03-29   
301-287 8   1958 ATX TELECOMMUNICATIONS SERVICES, LTD 236   2004-03-27   
301-287 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-321 A CHCHMDBE5MD  4749 TELCOVE OPERATIONS, INC. - MD 236      
301-321 0   2593 CORE COMMUNICATIONS, INC. - MD 236   2018-06-16   
301-321 1   4749 TELCOVE OPERATIONS, INC. - MD 236      
301-321 2   2593 CORE COMMUNICATIONS, INC. - MD 236   2018-06-16   
301-321 3   5977 BROADVIEW NETWORKS, INC. - DC 236   2014-06-09   
301-321 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2016-09-01   
301-321 5   9212 VERIZON MARYLAND, INC. 236   2005-12-12   
301-321 6   2593 CORE COMMUNICATIONS, INC. - MD 236   2018-06-16   
301-321 7   876D ONVOY, LLC - MD 236   2016-01-07   

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Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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