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.

OCN: 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD

<< 1 2 3

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
410-794 3 Columbia MD BLTMMDDNDS2  238      
410-794 4 Columbia MD BLTMMDDNDS2  238      
410-794 7 Columbia MD BLTMMDDNDS2  238      
410-794 8 Columbia MD BLTMMDDNDS2  238      
410-794 9 Columbia MD BLTMMDDNDS2  238      
410-807 A Catonsville MD BLTMMDDNDS2  238      
410-807 7 Catonsville MD BLTMMDDNDS2  238      
410-824 A Waterloo (Washington DC LATA) MD LARLMDCC5MD  236      
410-824 7 Waterloo (Washington DC LATA) MD LARLMDCC5MD  236      
410-921 A Severn MD BLTMMDDNDS2  238      
410-921 4 Severn MD BLTMMDDNDS2  238      
410-927 A Odenton MD BLTMMDDNDS2  238      
410-927 0 Odenton MD BLTMMDDNDS2  238      
410-927 2 Odenton MD BLTMMDDNDS2  238      
410-927 4 Odenton MD BLTMMDDNDS2  238      
410-927 7 Odenton MD BLTMMDDNDS2  238      
410-927 9 Odenton MD BLTMMDDNDS2  238      
443-290 A Parkville MD BLTMMDDNDS2  238      
443-290 2 Parkville MD BLTMMDDNDS2  238      
443-353 4 Cockeysville MD BLTMMDDNDS2  238   2012-04-26   
443-403 8 Aberdeen MD BLTMMDDNDS2  236   2013-08-18   
443-440 3 Annapolis MD BLTMMDDNDS2  238   2010-11-07   
443-440 8 Annapolis MD BLTMMDDNDS2  238   2011-02-11   
443-440 9 Annapolis MD BLTMMDDNDS2  238   2011-02-11   
443-657 A Randallstown MD BLTMMDDNDS2  238      
443-657 2 Randallstown MD BLTMMDDNDS2  238      
443-708 A Baltimore MD BLTMMDDNDS2  238      
443-708 9 Baltimore MD BLTMMDDNDS2  238      
443-798 A Towson MD BLTMMDDNDS2  238      
443-798 9 Towson MD BLTMMDDNDS2  238      
443-870 A Pikesville MD BLTMMDDNDS2  238      
443-870 2 Pikesville MD BLTMMDDNDS2  238      
443-870 6 Pikesville MD BLTMMDDNDS2  238      
443-870 7 Pikesville MD BLTMMDDNDS2  238      
443-870 8 Pikesville MD BLTMMDDNDS2  238      
443-870 9 Pikesville MD BLTMMDDNDS2  238      
443-905 3 Annapolis MD BLTMMDDNDS2  238   2013-09-21   
443-905 4 Annapolis MD BLTMMDDNDS2  238   2013-10-04   
443-905 5 Annapolis MD BLTMMDDNDS2  238   2013-10-04   
443-951 7 Annapolis MD BLTMMDDNDS2  238   2014-11-12   

<< 1 2 3

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.