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: SNANTXDIDS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
210-308 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-321 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-323 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-340 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-341 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-342 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-343 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-344 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-348 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-349 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-366 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-377 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-384 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-442 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-524 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-525 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-541 A San Antonio TX 9533 SOUTHWESTERN BELL 566      
210-644 A San Antonio TX 9533 SOUTHWESTERN BELL 566   2009-01-26   
210-979 A San Antonio TX 9533 SOUTHWESTERN BELL 566      

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

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