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: SNANTXCUDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
210-201 A San Antonio TX 9533 SOUTHWESTERN BELL 566   2011-11-06   
210-256 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-257 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-397 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-509 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-520 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-521 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-522 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-523 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-543 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-586 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-647 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-680 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-681 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-682 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-684 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-688 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-703 A San Antonio TX 9533 SOUTHWESTERN BELL 566   2007-09-01   
210-706 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-766 A San Antonio TX 9533 SOUTHWESTERN BELL 566   2011-06-10   
210-767 A San Antonio TX 9533 SOUTHWESTERN BELL 566      

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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