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.
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Switch: PLDLCA11RPA

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
661-236 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-285 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-533 A Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-533 0 Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-533 1 Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-533 2 Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-533 3 Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-533 5 Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-533 6 Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-533 7 Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-533 8 Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      
661-533 9 Palmdale: Palmdale DA CA 9740 PACIFIC BELL 730      

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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