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: CHYNWYRF6MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
208-998 8 Tygee Valley ID 145J TERRA NOVA TELECOM INC. 654   2023-08-06   
307-221 8 Cheyenne WY 145J TERRA NOVA TELECOM INC. 654   2023-11-11   
307-400 A Cheyenne WY 145J TERRA NOVA TELECOM INC. 654      
307-650 9 Cheyenne WY 145J TERRA NOVA TELECOM INC. 654   2023-04-27   

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

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