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: LSANCA23DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
323-221 A Los Angeles: DA 04 CA 9740 PACIFIC BELL 730      
323-222 A Los Angeles: DA 04 CA 9740 PACIFIC BELL 730      
323-223 A Los Angeles: DA 04 CA 9740 PACIFIC BELL 730      
323-224 A Los Angeles: DA 04 CA 9740 PACIFIC BELL 730      
323-225 A Los Angeles: DA 04 CA 9740 PACIFIC BELL 730      
323-226 A Los Angeles: DA 04 CA 9740 PACIFIC BELL 730      
323-227 A Los Angeles: DA 04 CA 9740 PACIFIC BELL 730      
323-276 A Los Angeles: DA 04 CA 9740 PACIFIC BELL 730      
323-342 A Los Angeles: DA 04 CA 9740 PACIFIC BELL 730      
323-343 A Los Angeles: DA 04 CA 9740 PACIFIC BELL 730      
323-352 A Los Angeles: DA 04 CA 9740 PACIFIC BELL 730      
323-409 A Los Angeles: DA 04 CA 9740 PACIFIC BELL 730      
323-441 A Los Angeles: DA 04 CA 9740 PACIFIC BELL 730      
323-539 A Los Angeles: DA 04 CA 9740 PACIFIC BELL 730      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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