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: HSTNTXNADS1

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
713-584 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-584 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-585 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-585 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-585 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-585 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-585 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-585 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-585 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-599 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-621 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-622 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-623 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-623 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-623 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-623 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-623 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-623 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-623 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-623 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-623 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-624 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-624 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-624 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-624 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-624 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-624 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-624 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-624 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-624 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-836 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-836 4 Houston TX 9533 SOUTHWESTERN BELL 560   2011-01-14   
713-836 5 Houston TX 9533 SOUTHWESTERN BELL 560   2011-01-14   
713-836 6 Houston TX 9533 SOUTHWESTERN BELL 560   2011-01-14   
713-836 7 Houston TX 9533 SOUTHWESTERN BELL 560   2011-01-14   
713-840 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-850 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-871 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-877 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-888 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-940 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-940 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-940 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-940 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-940 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-940 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-940 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-940 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-940 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-960 A Houston TX 9533 SOUTHWESTERN BELL 560      

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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