Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: BLTMMDCHXNX

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
443-203 2 West River MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2008-06-20   
443-213 1 Pikesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2006-09-11   
443-218 8 Worthington MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2006-08-07   
443-228 4 Chase MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-12-12   
443-276 A Columbia MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-276 0 Columbia MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-276 1 Columbia MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-276 2 Columbia MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-276 4 Columbia MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-276 5 Columbia MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-276 6 Columbia MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-276 7 Columbia MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-276 9 Columbia MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-279 A Towson MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-279 0 Towson MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-279 1 Towson MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-279 2 Towson MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-279 3 Towson MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-279 4 Towson MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-279 5 Towson MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-279 6 Towson MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-279 7 Towson MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-279 9 Towson MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-281 A Cockeysville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-281 0 Cockeysville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-281 1 Cockeysville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-281 2 Cockeysville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-281 5 Cockeysville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-281 6 Cockeysville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-281 7 Cockeysville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-285 6 Columbia MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-288 A Ellicott City MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-288 0 Ellicott City MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-288 1 Ellicott City MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-288 2 Ellicott City MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-288 4 Ellicott City MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-288 5 Ellicott City MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-288 6 Ellicott City MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-288 7 Ellicott City MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-288 8 Ellicott City MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-288 9 Ellicott City MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-293 8 Westminster MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2007-05-14   
443-296 6 Waterloo MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2009-07-11   
443-296 8 Waterloo MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-08-14   
443-296 9 Waterloo MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-08-14   
443-303 8 Aberdeen MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2007-02-19   
443-304 3 Arbutus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2006-10-14   
443-304 6 Arbutus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2006-10-20   
443-308 A Severn MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-308 0 Severn MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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