Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-841 A Laurel (Baltimore LATA) MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
240-842 A Washington Zone 14 (Baltimore LATA) MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
240-843 A Washington Zone 13 (Baltimore LATA) MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
410-587 A Arbutus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
410-650 A Dundalk MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-200 A Woodlawn MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-276 A Columbia MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-279 A Towson MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-281 A Cockeysville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-288 A Ellicott City MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-308 A Severn MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-334 A Pikesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-400 A Brooklyn Park-Linthicum MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-407 A Dundalk MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-408 A Sparrows Point MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-430 A Columbia MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-433 A Annapolis MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-440 A Annapolis MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-458 A Annapolis MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-460 A Essex MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-498 A Catonsville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-503 A 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      
443-557 A Glen Burnie MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-558 A Aberdeen MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-568 A Arbutus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-576 A Randallstown MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-588 A Parkville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-637 A Armiger-Gibson Island MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-650 A Reisterstown MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-692 A Baltimore MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-701 A Arbutus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-703 A Baltimore MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-710 A Catonsville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-720 A Aberdeen MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-773 A Brooklyn Park-Linthicum MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-779 A Aberdeen MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-782 A Annapolis MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-793 A Parkville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-795 A Severn MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-796 A Pikesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-797 A Towson MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-815 A Essex MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-816 A Severna Park MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-817 A Armiger-Gibson Island MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-836 A Baltimore MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-891 A Glen Burnie MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-893 A Woodlawn MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-973 A Ellicott City MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
667-424 A Odenton MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
667-492 A Severn MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2024-07-22   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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