Local Calling Guide

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Thurmont, MD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
227-247 A CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2024-08-15   
227-247 0 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2024-08-15   
240-288 A FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240      
240-288 0 FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2022-03-10   
240-288 1 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2010-09-04   
240-288 2 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2024-03-07   
240-288 3 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2014-05-10   
240-288 4   829J PAETEC ITEL, LLC 240   2014-11-03   
240-288 5 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-03-06   
240-288 6 FRDRMDFRXAX  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 240   2012-07-20   
240-288 7 FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2015-04-03   
240-288 8 FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2007-04-07   
240-288 9 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-10-26   
240-451 A CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-451 0 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2017-07-31   
240-451 1 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2017-07-31   
240-451 2 FRDRMDFRX7X  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 240   2018-07-12   
240-451 3   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-06-17   
240-451 4   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-06-17   
240-451 5   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-06-17   
240-451 6 HGTWMD530MD  073H TELNYX LLC 240   2017-08-08   
240-451 7 FRDRMDFRXKX  508J CENTURYLINK COMMUNICATIONS, LLC 240   2016-10-28   
240-451 8 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2016-10-02   
240-451 9 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2016-10-02   
240-874 A CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-874 0 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2024-05-03   
240-874 1 FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2022-01-17   
240-874 2 FRDRMDFRXMD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2022-07-03   
240-874 3 FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2021-05-24   
240-874 4 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2021-03-04   
240-874 5 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2021-03-04   
240-874 6 FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2022-01-17   
240-874 7 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2019-12-11   
240-874 8 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2019-12-11   
240-874 9 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2021-11-29   
301-271 A THRMMDTHRS0  9212 VERIZON MARYLAND, INC. 240      
301-271 0 THRMMDTHRS0  9212 VERIZON MARYLAND, INC. 240      
301-271 1 THRMMDTHRS0  9212 VERIZON MARYLAND, INC. 240      
301-271 2 THRMMDTHRS0  9212 VERIZON MARYLAND, INC. 240      
301-271 3 THRMMDTHRS0  9212 VERIZON MARYLAND, INC. 240      
301-271 4 THRMMDTHRS0  9212 VERIZON MARYLAND, INC. 240      
301-271 5 THRMMDTHRS0  9212 VERIZON MARYLAND, INC. 240      
301-271 6 THRMMDTHRS0  9212 VERIZON MARYLAND, INC. 240      
301-271 7 THRMMDTHRS0  9212 VERIZON MARYLAND, INC. 240      
301-271 8   2593 CORE COMMUNICATIONS, INC.- MD 240   2004-03-28   
301-271 9 THRMMDTHRS0  9212 VERIZON MARYLAND, INC. 240      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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