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: PLDLCA01DS0

Remotes:

Switch Switch name Switch type
ACTNCA11RS1  ACTON  RSC 
AGDLCA11RS0  AGUA DULCE  RSC 
LNVYCA11RS0  LEONA VALLEY  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
661-223 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-224 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-225 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-233 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-265 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-266 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-267 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-272 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-273 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-274 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-537 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-538 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-540 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-572 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-574 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-575 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-789 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-947 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      

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

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