Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
443-274 3 Severn MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-275 4 Towson MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
443-275 6 Towson MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2012-10-27   
443-289 A Westminster MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
443-289 2 Westminster MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2011-06-30   
443-289 3 Westminster MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2011-06-30   
443-300 3 Sykesville MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-302 6 Crofton MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-303 3 Aberdeen MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 236   2007-04-15   
443-354 5 Glen Burnie MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2009-11-05   
443-390 3 Churchville MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-02-01   
443-409 3 Edgewood MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-425 3 Parkville MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-430 7 Columbia MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-05-30   
443-430 8 Columbia MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2006-03-11   
443-441 5 Glenwood MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2018-01-22   
443-470 7 Towson MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2011-12-01   
443-475 A Baltimore MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
443-475 3 Baltimore MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2011-07-16   
443-475 4 Baltimore MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2011-07-16   
443-489 5 Chase MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-491 7 Parkton MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2020-09-04   
443-494 3 Millersville MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-508 3 Hampstead MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2009-01-05   
443-514 3 Catonsville MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2021-05-13   
443-532 3 Prince Frederick MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2007-04-15   
443-535 4 Columbia MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2006-05-15   
443-539 5 Columbia MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-546 2 Columbia MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2007-08-24   
443-567 7 Bel Air MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2012-04-17   
443-576 3 Randallstown MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-590 5 Reisterstown MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-594 3 Sparrows Point MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-598 3 Sherwood Forest MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-620 2 Waterloo MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2020-06-05   
443-625 3 Fork MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-660 1 Pikesville MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2005-06-05   
443-660 2 Pikesville MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2005-06-05   
443-660 3 Pikesville MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2005-06-05   
443-660 5 Pikesville MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2005-06-05   
443-686 7 Fallston MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2009-03-02   
443-696 4 Dundalk MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-707 4 Aberdeen MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 236   2014-11-17   
443-713 4 Glen Burnie MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2013-01-04   
443-731 4 Port Deposit MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2017-08-03   
443-733 3 Waterloo MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-741 A Columbia MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
443-741 3 Columbia MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2011-05-13   
443-741 4 Columbia MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2012-05-05   
443-750 6 Baltimore MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2010-08-25   

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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