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: FRSNCA01XXZ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
559-337 4 Badger CA 145J TERRA NOVA TELECOM INC. 728   2026-01-04   
559-404 7 Coalinga CA 145J TERRA NOVA TELECOM INC. 728   2026-01-04   
559-538 A Fresno CA 145J TERRA NOVA TELECOM INC. 728      
559-560 4 Porterville CA 145J TERRA NOVA TELECOM INC. 728   2026-04-30   
559-872 7 Clovis CA 145J TERRA NOVA TELECOM INC. 728   2026-05-01   
559-884 8 Burrel CA 145J TERRA NOVA TELECOM INC. 728   2026-06-05   
559-923 7 Laton CA 145J TERRA NOVA TELECOM INC. 728   2026-07-06   
559-991 4 Tulare CA 145J TERRA NOVA TELECOM INC. 728   2026-05-11   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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