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: SLBRMD906MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-973 8 Berlin MD 145J TERRA NOVA TELECOM INC. 242   2026-01-04   
443-298 7 Easton MD 145J TERRA NOVA TELECOM INC. 242   2026-01-04   
667-330 4 Salisbury MD 145J TERRA NOVA TELECOM INC. 242   2026-03-29   
667-855 A Salisbury MD 145J TERRA NOVA TELECOM INC. 242      
667-855 5 Salisbury MD 145J TERRA NOVA TELECOM INC. 242   2019-04-22   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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