Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: BLTMMDDNDS2

1 2 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
301-532 4 Laurel (Baltimore LATA) MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2016-04-21   
410-369 A Baltimore MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-369 0 Baltimore MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-369 1 Baltimore MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-369 2 Baltimore MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-369 3 Baltimore MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-369 4 Baltimore MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-369 5 Baltimore MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-369 7 Baltimore MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-369 9 Baltimore MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-406 3 Essex MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2006-06-01   
410-565 A Arbutus MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-565 0 Arbutus MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-565 1 Arbutus MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-565 3 Arbutus MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-565 4 Arbutus MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-565 7 Arbutus MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-565 9 Arbutus MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-589 A Brooklyn Park-Linthicum MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-589 1 Brooklyn Park-Linthicum MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-589 4 Brooklyn Park-Linthicum MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-589 7 Brooklyn Park-Linthicum MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-589 8 Brooklyn Park-Linthicum MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-589 9 Brooklyn Park-Linthicum MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-595 A Glen Burnie MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-595 0 Glen Burnie MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-595 3 Glen Burnie MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-595 4 Glen Burnie MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-595 7 Glen Burnie MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-595 8 Glen Burnie MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-595 9 Glen Burnie MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-645 5 Woodlawn MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2006-06-01   
410-650 7 Dundalk MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2006-06-01   
410-680 A Ellicott City MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-680 0 Ellicott City MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-680 1 Ellicott City MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-680 4 Ellicott City MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-680 5 Ellicott City MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-680 7 Ellicott City MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-680 9 Ellicott City MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-717 A Elkridge MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-717 0 Elkridge MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-717 1 Elkridge MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-717 4 Elkridge MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-717 7 Elkridge MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-717 9 Elkridge MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-741 4 West River MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2013-01-11   
410-794 A Columbia MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-794 0 Columbia MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-794 1 Columbia MD 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      

1 2 >>

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.