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: WLMGCA01DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
310-233 A San Pedro CA 9740 PACIFIC BELL 730      
310-513 A San Pedro CA 9740 PACIFIC BELL 730      
310-513 0 San Pedro CA 9740 PACIFIC BELL 730      
310-513 1 San Pedro CA 9740 PACIFIC BELL 730      
310-513 2 San Pedro CA 9740 PACIFIC BELL 730      
310-513 6 San Pedro CA 9740 PACIFIC BELL 730      
310-513 7 San Pedro CA 9740 PACIFIC BELL 730      
310-513 8 San Pedro CA 9740 PACIFIC BELL 730      
310-513 9 San Pedro CA 9740 PACIFIC BELL 730      
310-518 A San Pedro CA 9740 PACIFIC BELL 730      
310-522 A San Pedro CA 9740 PACIFIC BELL 730      
310-549 A San Pedro CA 9740 PACIFIC BELL 730      
310-816 A San Pedro CA 9740 PACIFIC BELL 730      
310-830 A San Pedro CA 9740 PACIFIC BELL 730      
310-834 A San Pedro CA 9740 PACIFIC BELL 730      
310-835 A San Pedro CA 9740 PACIFIC BELL 730      
310-847 A San Pedro CA 9740 PACIFIC BELL 730      
310-847 1 San Pedro CA 9740 PACIFIC BELL 730      
310-847 2 San Pedro CA 9740 PACIFIC BELL 730      
310-847 3 San Pedro CA 9740 PACIFIC BELL 730      
310-847 4 San Pedro CA 9740 PACIFIC BELL 730      
310-847 5 San Pedro CA 9740 PACIFIC BELL 730      
310-847 6 San Pedro CA 9740 PACIFIC BELL 730      
310-847 7 San Pedro CA 9740 PACIFIC BELL 730      
310-847 8 San Pedro CA 9740 PACIFIC BELL 730      
310-952 A San Pedro CA 9740 PACIFIC BELL 730      
323-775 A Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-775 0 Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-775 1 Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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