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: HSTNTXJADS0

1 2 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
713-284 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-285 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-342 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-348 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-348 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-348 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-348 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-348 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-348 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-348 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-348 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-348 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-348 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-520 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-521 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-522 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-523 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-524 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-525 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-526 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-527 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-527 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-527 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-527 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-527 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-527 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-527 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-527 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-527 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-527 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-528 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-528 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-528 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-528 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-528 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-528 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-528 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-528 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-528 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-528 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-529 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-533 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-533 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-533 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-533 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-533 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-533 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-533 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-533 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-533 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-639 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-807 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-807 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-807 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-807 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-807 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-807 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-807 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-807 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-807 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-807 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-831 A Houston TX 9533 SOUTHWESTERN BELL 560      

1 2 >>

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.