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: STAHCA13RS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
530-573 A South Tahoe CA 9740 PACIFIC BELL 726      
530-573 0 South Tahoe CA 9740 PACIFIC BELL 726      
530-573 1 South Tahoe CA 9740 PACIFIC BELL 726      
530-573 2 South Tahoe CA 9740 PACIFIC BELL 726      
530-573 3 South Tahoe CA 9740 PACIFIC BELL 726      
530-573 4 South Tahoe CA 9740 PACIFIC BELL 726      
530-573 7 South Tahoe CA 9740 PACIFIC BELL 726      
530-577 A South Tahoe CA 9740 PACIFIC BELL 726      
530-577 0 South Tahoe CA 9740 PACIFIC BELL 726      
530-577 1 South Tahoe CA 9740 PACIFIC BELL 726      
530-577 2 South Tahoe CA 9740 PACIFIC BELL 726      
530-577 3 South Tahoe CA 9740 PACIFIC BELL 726      
530-577 4 South Tahoe CA 9740 PACIFIC BELL 726      
530-577 5 South Tahoe CA 9740 PACIFIC BELL 726      
530-577 6 South Tahoe CA 9740 PACIFIC BELL 726      
530-577 7 South Tahoe CA 9740 PACIFIC BELL 726      
530-577 8 South Tahoe CA 9740 PACIFIC BELL 726      
530-578 9 South Tahoe CA 9740 PACIFIC BELL 726      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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