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: SNANTXBADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
210-282 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-443 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-458 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-478 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-558 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-561 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-641 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-690 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-691 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-694 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-696 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-697 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-699 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-751 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-877 A San Antonio TX 9533 SOUTHWESTERN BELL 566      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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