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: HSTNTXALDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
281-495 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-498 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-530 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-561 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-564 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-568 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-575 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-776 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-879 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-933 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-983 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-988 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
713-234 A Sugar Land TX 7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 560      
713-531 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
832-328 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
832-351 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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