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: LRKSCA11DS0

Remotes:

Switch Switch name Switch type
PRSNCA11RS0  POINT REYES STATION  RSC 
SNGNCA11RS0  SAN GERONIMO  RSC 
STBHCA11RS0  STINSON BEACH  RSS 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
415-461 A San Rafael CA 9740 PACIFIC BELL 722      
415-464 A San Rafael CA 9740 PACIFIC BELL 722      
415-924 A Corte Madera CA 9740 PACIFIC BELL 722      
415-925 A San Rafael CA 9740 PACIFIC BELL 722      
415-927 A Corte Madera CA 9740 PACIFIC BELL 722      
415-945 A Corte Madera CA 9740 PACIFIC BELL 722      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.