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: HSTNTXCADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
713-216 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-217 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-220 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-221 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-222 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-223 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-224 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-225 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-226 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-227 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-228 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-229 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-236 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-237 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-238 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-247 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-250 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-259 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-274 A Houston TX 9533 SOUTHWESTERN BELL 560   2010-08-18   
713-315 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-368 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-437 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-546 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-547 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-588 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-632 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-755 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-837 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-925 A Houston TX 6901 AIR & WIRE NETWORK COMM INC, DBA IN-TOUCH COMM 560      
832-239 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-393 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-394 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-395 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-830 A Houston TX 9533 SOUTHWESTERN BELL 560      

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

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