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: HLSTCA11DS0

Remotes:

Switch Switch name Switch type
SNJNCA11RS1  SAN JUAN  5ER 
TRPSCA11RS0  TRES PINOS  5ER 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
831-630 A Hollister CA 9740 PACIFIC BELL 736      
831-634 A Hollister CA 9740 PACIFIC BELL 736      
831-635 A Hollister CA 9740 PACIFIC BELL 736      
831-636 A Hollister CA 9740 PACIFIC BELL 736      
831-637 A Hollister CA 9740 PACIFIC BELL 736      
831-638 A Hollister CA 9740 PACIFIC BELL 736      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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