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: PRVWTXPRRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
936-251 8 Prairie View TX 9533 SOUTHWESTERN BELL 560   2016-09-16   
936-261 1 Prairie View TX 9533 SOUTHWESTERN BELL 560   2005-11-27   
936-261 2 Prairie View TX 9533 SOUTHWESTERN BELL 560   2005-11-27   
936-261 3 Prairie View TX 9533 SOUTHWESTERN BELL 560   2005-11-27   
936-261 5 Prairie View TX 9533 SOUTHWESTERN BELL 560   2005-11-27   
936-261 9 Prairie View TX 9533 SOUTHWESTERN BELL 560   2005-11-27   
936-857 A Prairie View TX 9533 SOUTHWESTERN BELL 560      
936-857 1 Prairie View TX 9533 SOUTHWESTERN BELL 560      
936-857 2 Prairie View TX 9533 SOUTHWESTERN BELL 560      
936-857 3 Prairie View TX 9533 SOUTHWESTERN BELL 560      
936-857 4 Prairie View TX 9533 SOUTHWESTERN BELL 560      
936-857 5 Prairie View TX 9533 SOUTHWESTERN BELL 560      
936-857 6 Prairie View TX 9533 SOUTHWESTERN BELL 560      
936-857 7 Prairie View TX 9533 SOUTHWESTERN BELL 560      
936-857 9 Prairie View TX 9533 SOUTHWESTERN BELL 560      

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

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