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
443-503 2 Dundalk MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-524 A Baltimore MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-548 A Pikesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-548 0 Pikesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-548 1 Pikesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-548 2 Pikesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-548 4 Pikesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-548 5 Pikesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-548 6 Pikesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-548 7 Pikesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-548 8 Pikesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-548 9 Pikesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-557 A Glen Burnie MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-557 0 Glen Burnie MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-557 1 Glen Burnie MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-557 2 Glen Burnie MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-557 4 Glen Burnie MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-557 5 Glen Burnie MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-557 6 Glen Burnie MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-557 7 Glen Burnie MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-557 9 Glen Burnie MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-558 A Aberdeen MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-558 0 Aberdeen MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-558 2 Aberdeen MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2013-08-07   
443-558 3 Aberdeen MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-558 7 Aberdeen MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-568 A Arbutus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-568 0 Arbutus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-568 1 Arbutus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-568 2 Arbutus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-568 4 Arbutus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-568 5 Arbutus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-568 9 Arbutus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-576 A Randallstown MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-576 0 Randallstown MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-576 1 Randallstown MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-576 4 Randallstown MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-588 A Parkville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-588 0 Parkville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-588 1 Parkville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-588 2 Parkville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-588 4 Parkville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-588 5 Parkville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-588 7 Parkville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-588 9 Parkville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-637 A Armiger-Gibson Island MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-637 0 Armiger-Gibson Island MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-637 3 Armiger-Gibson Island MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-637 5 Armiger-Gibson Island MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-650 A Reisterstown 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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