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: BLTMMDCHDMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-237 0 Baltimore MD 551G NUSO, LLC 238      
410-291 1 Baltimore MD 551G NUSO, LLC 238      
410-291 8 Baltimore MD 551G NUSO, LLC 238      
443-264 8 Pikesville MD 551G NUSO, LLC 238      
443-352 1 Pikesville MD 551G NUSO, LLC 238      
443-352 9 Pikesville MD 551G NUSO, LLC 238      
443-501 8 Pikesville MD 551G NUSO, LLC 238      
443-738 6 Pikesville MD 551G NUSO, LLC 238      
443-898 5 Pikesville MD 551G NUSO, LLC 238      
443-898 7 Pikesville MD 551G NUSO, LLC 238      
667-260 8 Baltimore MD 551G NUSO, LLC 238      
667-303 A Baltimore MD 551G NUSO, LLC 238      
667-303 1 Baltimore MD 551G NUSO, LLC 238      
667-303 2 Baltimore MD 551G NUSO, LLC 238      
667-305 A Pikesville MD 551G NUSO, LLC 238      
667-305 1 Pikesville MD 551G NUSO, LLC 238      
667-400 8 Baltimore MD 551G NUSO, LLC 238      
667-400 9 Baltimore MD 551G NUSO, LLC 238      
667-402 0 Baltimore MD 551G NUSO, LLC 238      
667-402 2 Baltimore MD 551G NUSO, LLC 238      
667-402 3 Baltimore MD 551G NUSO, LLC 238      
667-402 4 Baltimore MD 551G NUSO, LLC 238      
667-402 5 Baltimore MD 551G NUSO, LLC 238      
667-402 6 Baltimore MD 551G NUSO, LLC 238      
667-402 8 Baltimore MD 551G NUSO, LLC 238      
667-402 9 Baltimore MD 551G NUSO, LLC 238      
667-771 2 Baltimore MD 551G NUSO, LLC 238      
667-771 3 Baltimore MD 551G NUSO, LLC 238      
667-771 4 Baltimore MD 551G NUSO, LLC 238      
667-771 5 Baltimore MD 551G NUSO, LLC 238      
667-771 6 Baltimore MD 551G NUSO, LLC 238      
667-867 0 Baltimore MD 551G NUSO, LLC 238      
667-867 1 Baltimore MD 551G NUSO, LLC 238      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.