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: BLTMMDSNDS5

1 2 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-205 2 Pikesville MD 4773 XO MARYLAND, LLC 238   2009-09-09   
410-630 3 Chase MD 4773 XO MARYLAND, LLC 238   2005-08-14   
410-630 5 Chase MD 4773 XO MARYLAND, LLC 238   2005-08-14   
443-203 2 West River MD 4773 XO MARYLAND, LLC 238   2008-06-20   
443-203 3 West River MD 4773 XO MARYLAND, LLC 238   2007-04-20   
443-213 1 Pikesville MD 4773 XO MARYLAND, LLC 238   2006-09-11   
443-228 4 Chase MD 4773 XO MARYLAND, LLC 238   2005-12-12   
443-304 3 Arbutus MD 4773 XO MARYLAND, LLC 238   2006-10-14   
443-319 8 Columbia MD 4773 XO MARYLAND, LLC 238   2010-11-19   
443-327 4 Aberdeen MD 4773 XO MARYLAND, LLC 236   2005-10-13   
443-327 5 Aberdeen MD 4773 XO MARYLAND, LLC 236   2005-10-13   
443-330 6 Cockeysville MD 4773 XO MARYLAND, LLC 238   2011-04-13   
443-335 A Brooklyn Park-Linthicum MD 4773 XO MARYLAND, LLC 238      
443-335 3 Brooklyn Park-Linthicum MD 4773 XO MARYLAND, LLC 238      
443-345 3 Aberdeen MD 4773 XO MARYLAND, LLC 236   2010-03-13   
443-388 5 Baltimore MD 4773 XO MARYLAND, LLC 238   2006-07-28   
443-403 4 Aberdeen MD 4773 XO MARYLAND, LLC 236   2010-10-20   
443-403 5 Aberdeen MD 4773 XO MARYLAND, LLC 236   2010-10-20   
443-403 6 Aberdeen MD 4773 XO MARYLAND, LLC 236   2010-10-20   
443-403 7 Aberdeen MD 4773 XO MARYLAND, LLC 236   2010-10-20   
443-408 3 Sparrows Point MD 4773 XO MARYLAND, LLC 238   2005-10-13   
443-408 4 Sparrows Point MD 4773 XO MARYLAND, LLC 238   2005-10-13   
443-445 4 Elkridge MD 4773 XO MARYLAND, LLC 238   2005-02-15   
443-445 5 Elkridge MD 4773 XO MARYLAND, LLC 238   2005-02-15   
443-445 6 Elkridge MD 4773 XO MARYLAND, LLC 238   2005-02-15   
443-459 5 Elkridge MD 4773 XO MARYLAND, LLC 238   2005-12-12   
443-478 2 Baltimore MD 4773 XO MARYLAND, LLC 238   2010-01-30   
443-478 4 Baltimore MD 4773 XO MARYLAND, LLC 238   2010-03-04   
443-478 5 Baltimore MD 4773 XO MARYLAND, LLC 238   2010-03-04   
443-488 5 Baltimore MD 4773 XO MARYLAND, LLC 238   2010-10-20   
443-488 6 Baltimore MD 4773 XO MARYLAND, LLC 238   2010-10-20   
443-488 7 Baltimore MD 4773 XO MARYLAND, LLC 238   2010-10-20   
443-488 8 Baltimore MD 4773 XO MARYLAND, LLC 238   2010-10-20   
443-488 9 Baltimore MD 4773 XO MARYLAND, LLC 238   2010-10-20   
443-558 2 Aberdeen MD 4773 XO MARYLAND, LLC 236   2013-08-07   
443-578 A Cockeysville MD 4773 XO MARYLAND, LLC 238      
443-578 0 Cockeysville MD 4773 XO MARYLAND, LLC 238      
443-578 4 Cockeysville MD 4773 XO MARYLAND, LLC 238      
443-578 5 Cockeysville MD 4773 XO MARYLAND, LLC 238      
443-627 9 Baltimore MD 4773 XO MARYLAND, LLC 238   2010-10-20   
443-663 1 Woodlawn MD 4773 XO MARYLAND, LLC 238   2013-11-04   
443-681 1 Baltimore MD 4773 XO MARYLAND, LLC 238   2010-12-06   
443-681 2 Baltimore MD 4773 XO MARYLAND, LLC 238   2010-12-06   
443-681 3 Baltimore MD 4773 XO MARYLAND, LLC 238   2010-12-06   
443-681 4 Baltimore MD 4773 XO MARYLAND, LLC 238   2010-12-06   
443-681 5 Baltimore MD 4773 XO MARYLAND, LLC 238   2010-12-06   
443-712 5 Reisterstown MD 4773 XO MARYLAND, LLC 238   2007-07-30   
443-720 A Aberdeen MD 4773 XO MARYLAND, LLC 236      
443-720 1 Aberdeen MD 4773 XO MARYLAND, LLC 236   2013-01-11   
443-720 2 Aberdeen MD 4773 XO MARYLAND, LLC 236   2013-01-11   

1 2 >>

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.