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Washington Zone 11, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-939 9 SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2023-09-22   
301-230 A RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-231 A RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-231 0 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-231 1 VINNVACBDS0  876D ONVOY, LLC - MD 236   2014-09-01   
301-231 2 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-231 3 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-231 4 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-231 5 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-231 6 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-231 7 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-231 8 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-231 9 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-255 A RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-255 0 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-255 1 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-255 2 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-255 3 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-255 4 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-255 5 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-255 6 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-255 7 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-255 8 RKVLMDMRDS0  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 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-287 1   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-24   
301-287 2 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-287 3 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-287 4 VINNVACBDS0  876D ONVOY, LLC - MD 236   2017-12-08   
301-287 5 VINNVACBDS0  876D ONVOY, LLC - MD 236   2017-12-08   
301-287 6 VINNVACBDS0  876D ONVOY, LLC - MD 236   2017-12-08   
301-287 7   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-03-29   
301-287 8 WASHDCSWXZZ  829J PAETEC ITEL, LLC 236   2004-03-27   
301-287 9 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-321 A VINNVACBDS0  876D ONVOY, LLC - MD 236      
301-321 0   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
301-321 1 SLSPMD913MD  939H COMMIO, LLC 236   2021-08-29   
301-321 2   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
301-321 3 WASHDCSWXZZ  829J PAETEC ITEL, LLC 236   2014-06-09   
301-321 4 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2016-09-01   
301-321 5 RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236   2005-12-12   
301-321 6   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
301-321 7 VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-01-07   
301-321 8 VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-01-07   
301-321 9   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-24   
301-348 A WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-348 0   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-24   
301-348 1 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-348 2   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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