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: SNANTXUCDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
210-565 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-566 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-619 0 San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-619 1 San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-619 4 San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-619 5 San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-652 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-658 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-659 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-945 A San Antonio TX 9533 SOUTHWESTERN BELL 566      

Last updated: Fri, 13 May 2022 22:16:13 UTC

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