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: BLTQMD018MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
227-888 2 Washington Zone 15 (Baltimore LATA) MD 145J TERRA NOVA TELECOM INC. 238      
240-865 6 Washington Zone 14 (Baltimore LATA) MD 145J TERRA NOVA TELECOM INC. 238      
410-919 5 Annapolis MD 145J TERRA NOVA TELECOM INC. 238      
443-307 9 Bel Air MD 145J TERRA NOVA TELECOM INC. 238      
443-371 5 Bel Air MD 145J TERRA NOVA TELECOM INC. 238      
443-455 4 Baltimore MD 145J TERRA NOVA TELECOM INC. 238      
443-471 9 Pikesville MD 145J TERRA NOVA TELECOM INC. 238      
443-482 4 Annapolis MD 145J TERRA NOVA TELECOM INC. 238      
443-492 7 Elkridge MD 145J TERRA NOVA TELECOM INC. 238      
443-689 8 Cockeysville MD 145J TERRA NOVA TELECOM INC. 238      
667-333 2 Armiger-Gibson Island MD 145J TERRA NOVA TELECOM INC. 238      
667-447 4 Columbia MD 145J TERRA NOVA TELECOM INC. 238      
667-777 6 Severna Park MD 145J TERRA NOVA TELECOM INC. 238      
667-900 A Baltimore MD 145J TERRA NOVA TELECOM INC. 238      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.