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: HSTNTXCLDS0

Remotes:

Switch Switch name Switch type
HSTXTXSDRS0  DEER PARK  5ER 
HSTXTXSMRS0  HOUSTON  5ER 
SPRNTXSMRS0  SPRING  5ER 

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
281-228 A Houston TX 9533 SOUTHWESTERN BELL 560      
281-604 A Houston TX 9533 SOUTHWESTERN BELL 560      
281-727 A Houston TX 9533 SOUTHWESTERN BELL 560      
281-727 1 Houston TX 9533 SOUTHWESTERN BELL 560      
281-727 2 Houston TX 9533 SOUTHWESTERN BELL 560      
281-727 3 Houston TX 9533 SOUTHWESTERN BELL 560      
281-727 4 Houston TX 9533 SOUTHWESTERN BELL 560      
281-727 5 Houston TX 9533 SOUTHWESTERN BELL 560      
281-727 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-207 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-209 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-230 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-230 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-230 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-230 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-230 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-230 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-230 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-230 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-230 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-230 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-265 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-265 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-265 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-265 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-265 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-265 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-265 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-265 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-277 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-277 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-277 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-277 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-277 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-287 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-287 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-287 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-287 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-287 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-287 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-287 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-287 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-287 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-289 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-289 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-289 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-289 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-289 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-289 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-289 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-289 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-307 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-307 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-307 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-307 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-307 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-307 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-307 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-307 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-307 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-309 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-309 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-309 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-309 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-309 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-309 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-309 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-319 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-319 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-319 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-319 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-319 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-319 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-321 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-321 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-321 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-321 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-321 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-321 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-336 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-336 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-336 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-336 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-336 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-336 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-336 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-336 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-336 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-336 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-356 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-359 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-359 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-359 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-359 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-359 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-359 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-371 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-371 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-371 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-371 3 Houston TX 9533 SOUTHWESTERN BELL 560      

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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