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
281-436 3 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-454 0 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-495 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-498 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-498 0 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-498 1 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-498 2 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-498 3 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-498 4 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-498 5 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-498 6 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-498 7 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-498 8 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      
713-234 2 Sugar Land TX 7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 560   2007-10-28   
713-531 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
832-328 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
832-328 1 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
832-351 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
832-351 1 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
832-351 3 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
832-351 4 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
832-351 5 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
832-351 6 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
832-351 7 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
832-351 8 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
832-351 9 Houston Suburban TX 9533 SOUTHWESTERN BELL 560      

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

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