Local Calling Guide

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Mount Savage, MD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-836 A CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-836 2   876D ONVOY, LLC - MD 240   2021-11-01   
240-836 3   516J TON80 COMMUNICATIONS, LLC 240   2021-11-02   
240-836 4   197D VONAGE AMERICA LLC 240   2021-11-02   
240-836 5   876D ONVOY, LLC - MD 240   2021-12-19   
240-836 6   624H ONVOY SPECTRUM, LLC 240   2022-01-20   
240-836 8   624H ONVOY SPECTRUM, LLC 240   2022-01-20   
240-862 A CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-862 0   073H TELNYX LLC 240   2017-08-08   
240-862 1   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-06-17   
240-862 2   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-06-17   
240-862 3   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-06-17   
240-862 4   876D ONVOY, LLC - MD 240   2019-05-25   
240-862 5   624H ONVOY SPECTRUM, LLC 240   2021-05-24   
240-862 7   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2016-11-12   
240-862 8   876D ONVOY, LLC - MD 240   2016-10-02   
240-862 9   876D ONVOY, LLC - MD 240   2016-10-02   
301-264 A MTSVMDMSRS0  9212 VERIZON MARYLAND, INC. 240      
301-264 0   624H ONVOY SPECTRUM, LLC 240   2024-06-24   
301-264 1   2593 CORE COMMUNICATIONS, INC.- MD 240   2004-03-28   
301-264 2   228C IDT AMERICA, CORP. - MD 240   2006-03-10   
301-264 3   9212 VERIZON MARYLAND, INC. 240      
301-264 4   9212 VERIZON MARYLAND, INC. 240      
301-264 5   071F BANDWIDTH.COM CLEC, LLC - MD 240   2012-08-24   
301-264 6   071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-03-01   
301-264 7   071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-07-04   
301-264 8   071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-11-07   
301-264 9   876D ONVOY, LLC - MD 240   2021-07-11   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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