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: SLBRMDSBAMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-334 8 Salisbury MD 551G NUSO, LLC 242      
410-334 9 Salisbury MD 551G NUSO, LLC 242      
667-221 8 Salisbury MD 551G NUSO, LLC 242      
667-221 9 Salisbury MD 551G NUSO, LLC 242      
667-253 A Salisbury MD 551G NUSO, LLC 242      
667-253 1 Salisbury MD 551G NUSO, LLC 242      
667-266 1 Salisbury MD 551G NUSO, LLC 242      
667-266 8 Salisbury MD 551G NUSO, LLC 242      
667-266 9 Salisbury MD 551G NUSO, LLC 242      
667-800 3 Salisbury MD 551G NUSO, LLC 242      
667-800 4 Salisbury MD 551G NUSO, LLC 242      
667-800 5 Salisbury MD 551G NUSO, LLC 242      
667-800 6 Salisbury MD 551G NUSO, LLC 242      
667-800 7 Salisbury MD 551G NUSO, LLC 242      
667-800 8 Salisbury MD 551G NUSO, LLC 242      
667-800 9 Salisbury MD 551G NUSO, LLC 242      

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

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