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: FRSNCA12DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
559-251 A Fresno CA 9740 PACIFIC BELL 728      
559-252 A Fresno CA 9740 PACIFIC BELL 728      
559-253 A Fresno CA 9740 PACIFIC BELL 728      
559-253 0 Fresno CA 9740 PACIFIC BELL 728      
559-253 1 Fresno CA 9740 PACIFIC BELL 728      
559-253 2 Fresno CA 9740 PACIFIC BELL 728      
559-253 4 Fresno CA 9740 PACIFIC BELL 728      
559-253 5 Fresno CA 9740 PACIFIC BELL 728      
559-253 6 Fresno CA 9740 PACIFIC BELL 728      
559-253 7 Fresno CA 9740 PACIFIC BELL 728      
559-253 8 Fresno CA 9740 PACIFIC BELL 728      
559-253 9 Fresno CA 9740 PACIFIC BELL 728      
559-255 A Fresno CA 9740 PACIFIC BELL 728      
559-452 A Fresno CA 9740 PACIFIC BELL 728      
559-453 A Fresno CA 9740 PACIFIC BELL 728      
559-454 A Fresno CA 9740 PACIFIC BELL 728      
559-455 A Fresno CA 9740 PACIFIC BELL 728      
559-455 0 Fresno CA 9740 PACIFIC BELL 728      
559-455 1 Fresno CA 9740 PACIFIC BELL 728      
559-455 2 Fresno CA 9740 PACIFIC BELL 728      
559-455 4 Fresno CA 9740 PACIFIC BELL 728      
559-455 5 Fresno CA 9740 PACIFIC BELL 728      
559-455 6 Fresno CA 9740 PACIFIC BELL 728      
559-455 9 Fresno CA 9740 PACIFIC BELL 728      
559-456 A Fresno CA 9740 PACIFIC BELL 728      
559-458 A Fresno CA 9740 PACIFIC BELL 728      
559-458 0 Fresno CA 9740 PACIFIC BELL 728      
559-458 2 Fresno CA 9740 PACIFIC BELL 728      
559-458 4 Fresno CA 9740 PACIFIC BELL 728      
559-458 7 Fresno CA 9740 PACIFIC BELL 728      
559-600 A Fresno CA 9740 PACIFIC BELL 728      
559-600 0 Fresno CA 9740 PACIFIC BELL 728   2009-12-03   
559-600 1 Fresno CA 9740 PACIFIC BELL 728   2009-12-03   
559-600 2 Fresno CA 9740 PACIFIC BELL 728   2009-12-03   
559-600 3 Fresno CA 9740 PACIFIC BELL 728   2009-12-03   
559-600 4 Fresno CA 9740 PACIFIC BELL 728   2009-12-03   
559-600 5 Fresno CA 9740 PACIFIC BELL 728   2009-12-03   
559-600 6 Fresno CA 9740 PACIFIC BELL 728   2009-12-03   
559-600 7 Fresno CA 9740 PACIFIC BELL 728   2009-12-03   
559-600 8 Fresno CA 9740 PACIFIC BELL 728   2009-12-03   
559-600 9 Fresno CA 9740 PACIFIC BELL 728   2009-12-03   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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