Local Calling Guide

Area code/prefix search

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Sparrows Point, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-388 A NRPNMDNPDS0  9212 VERIZON MARYLAND, INC. 238      
410-477 A NRPNMDNPDS0  9212 VERIZON MARYLAND, INC. 238      
410-709 A BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-709 0   073H TELNYX LLC 238   2017-04-26   
410-709 1   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-09-22   
410-709 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-04-02   
410-709 3   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-05   
410-709 4   876D ONVOY, LLC - MD 238   2016-03-08   
410-709 5   9170 BROADVIEW NETWORKS, INC. - MD 238   2008-10-14   
410-709 6   876D ONVOY, LLC - MD 238   2016-03-24   
410-709 7   876D ONVOY, LLC - MD 238   2016-03-24   
410-709 8   071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
410-709 9   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
443-242 A HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-242 0   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-242 1   5562 METROPCS, INC. 238   2021-02-07   
443-242 2   2589 US LEC OF MARYLAND, INC. 238   2007-06-15   
443-242 3   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-242 4   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
443-242 5   5562 METROPCS, INC. 238   2020-09-27   
443-242 6   318J COMCAST IP PHONE LLC 238   2007-10-11   
443-242 7   318J COMCAST IP PHONE LLC 238   2005-03-10   
443-242 8   506J TWILIO INTERNATIONAL INC 238   2020-12-26   
443-337 A BLTMMDCHYMD  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-337 0   5562 METROPCS, INC. 238   2021-04-16   
443-337 1   5562 METROPCS, INC. 238   2019-10-13   
443-337 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
443-337 3   5562 METROPCS, INC. 238   2017-10-01   
443-337 4   5562 METROPCS, INC. 238   2018-01-06   
443-337 5   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-337 6   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-337 7   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-337 8   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
443-337 9   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-07-31   
443-408 A BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-408 0   4773 XO MARYLAND, LLC 238      
443-408 1   4773 XO MARYLAND, LLC 238      
443-408 2   145J TERRA NOVA TELECOM INC. 238   2021-01-28   
443-408 3   4773 XO MARYLAND, LLC 238   2005-10-13   
443-408 4   4773 XO MARYLAND, LLC 238   2005-10-13   
443-408 5   4773 XO MARYLAND, LLC 238   2005-10-13   
443-408 6   4773 XO MARYLAND, LLC 238   2005-10-13   
443-408 7   508J CENTURYLINK COMMUNICATIONS LLC 238   2014-06-25   
443-408 8   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-02-13   
443-408 9   4773 XO MARYLAND, LLC 238      
443-594 A BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 238      
443-594 0   6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 238      
443-594 1   6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 238      
443-594 2   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-02-10   
443-594 3   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   

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Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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