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      
831-630 0 Hollister CA 9740 PACIFIC BELL 736      
831-630 1 Hollister CA 9740 PACIFIC BELL 736      
831-630 2 Hollister CA 9740 PACIFIC BELL 736      
831-630 3 Hollister CA 9740 PACIFIC BELL 736      
831-630 5 Hollister CA 9740 PACIFIC BELL 736      
831-630 6 Hollister CA 9740 PACIFIC BELL 736      
831-630 9 Hollister CA 9740 PACIFIC BELL 736      
831-634 A Hollister CA 9740 PACIFIC BELL 736      
831-634 0 Hollister CA 9740 PACIFIC BELL 736      
831-634 1 Hollister CA 9740 PACIFIC BELL 736      
831-634 2 Hollister CA 9740 PACIFIC BELL 736      
831-634 3 Hollister CA 9740 PACIFIC BELL 736      
831-634 4 Hollister CA 9740 PACIFIC BELL 736      
831-634 5 Hollister CA 9740 PACIFIC BELL 736      
831-634 6 Hollister CA 9740 PACIFIC BELL 736      
831-634 7 Hollister CA 9740 PACIFIC BELL 736      
831-634 8 Hollister CA 9740 PACIFIC BELL 736      
831-635 A Hollister CA 9740 PACIFIC BELL 736      
831-635 0 Hollister CA 9740 PACIFIC BELL 736      
831-635 1 Hollister CA 9740 PACIFIC BELL 736      
831-635 2 Hollister CA 9740 PACIFIC BELL 736      
831-635 3 Hollister CA 9740 PACIFIC BELL 736      
831-635 4 Hollister CA 9740 PACIFIC BELL 736      
831-635 5 Hollister CA 9740 PACIFIC BELL 736      
831-635 6 Hollister CA 9740 PACIFIC BELL 736      
831-635 7 Hollister CA 9740 PACIFIC BELL 736      
831-635 9 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: Sun, 07 Dec 2025 22:02:11 UTC

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