Local Calling Guide

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Preston, MD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-673 A PSTNMDPSRS0  9212 VERIZON MARYLAND, INC. 242      
410-673 0 SLBRMDFSDS0  2593 CORE COMMUNICATIONS, INC.- MD 242   2004-04-03   
410-673 1 PSTNMDPSRS0  9212 VERIZON MARYLAND, INC. 242      
410-673 2 PSTNMDPSRS0  9212 VERIZON MARYLAND, INC. 242      
410-673 3 SLBRMD902MD  073H TELNYX LLC 242   2017-09-13   
410-673 4 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2017-04-14   
410-673 5 SLBRMD906MD  145J TERRA NOVA TELECOM INC. 242   2021-01-28   
410-673 6 ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242   2019-03-28   
410-673 7 PSTNMDPSRS0  9212 VERIZON MARYLAND, INC. 242      
410-673 8 SLBRMDSBXLX  318J COMCAST IP PHONE LLC 242   2006-07-31   
410-673 9 PSTNMDPSRS0  9212 VERIZON MARYLAND, INC. 242      
667-238 A ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-238 0   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-08-03   
667-238 1   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-08-03   
667-238 2   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-08-03   
667-238 3 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2021-03-05   
667-238 4 SLBRMD90DS0  2593 CORE COMMUNICATIONS, INC.- MD 242   2019-05-02   
667-238 6 SLBRMD90DS0  2593 CORE COMMUNICATIONS, INC.- MD 242   2019-05-02   
667-238 7 SLBRMD90DS0  2593 CORE COMMUNICATIONS, INC.- MD 242   2019-05-02   
667-238 8 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-04   
667-238 9 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-04   
667-342 A SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2021-10-31   
667-342 2 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2021-10-31   
667-342 3 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2021-12-20   
667-342 4   318J COMCAST IP PHONE LLC 242   2022-07-05   
667-342 6   516J TON80 COMMUNICATIONS LLC 242   2022-03-21   

Last updated: Thu, 04 Aug 2022 23:14:42 UTC

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