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: IWCYIA707MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
319-303 0 Denver IA 145J TERRA NOVA TELECOM INC. 635   2024-02-02   
319-323 2 Oelwein IA 145J TERRA NOVA TELECOM INC. 635   2024-02-14   
319-370 0 Coggon IA 145J TERRA NOVA TELECOM INC. 635   2024-02-13   
319-441 1 Center Point IA 145J TERRA NOVA TELECOM INC. 635   2024-02-13   
319-493 6 Waterloo IA 145J TERRA NOVA TELECOM INC. 635   2024-04-21   
319-500 9 Vinton IA 145J TERRA NOVA TELECOM INC. 635   2024-02-13   
319-900 A Cedar Rapids IA 145J TERRA NOVA TELECOM INC. 635      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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