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.
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Switch: TBLLTXKLDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
281-251 A Tomball TX 9533 SOUTHWESTERN BELL 560      
281-257 A Tomball TX 9533 SOUTHWESTERN BELL 560      
281-320 A Tomball EMS TX 9533 SOUTHWESTERN BELL 560      
281-370 A Tomball EMS TX 9533 SOUTHWESTERN BELL 560      
281-374 A Tomball EMS TX 9533 SOUTHWESTERN BELL 560      
281-376 A Tomball EMS TX 9533 SOUTHWESTERN BELL 560      
281-378 A Tomball EMS TX 9533 SOUTHWESTERN BELL 560      
281-379 A Tomball EMS TX 9533 SOUTHWESTERN BELL 560      
281-655 A Tomball EMS TX 9533 SOUTHWESTERN BELL 560      
281-826 A Tomball TX 9533 SOUTHWESTERN BELL 560      
346-246 A Tomball TX 9533 SOUTHWESTERN BELL 560      
832-534 A Tomball EMS TX 9533 SOUTHWESTERN BELL 560      
832-717 A Tomball TX 9533 SOUTHWESTERN BELL 560      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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