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      

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

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