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: TBLLTXTBDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
281-255 A Tomball TX 9533 SOUTHWESTERN BELL 560      
281-290 A Tomball EMS TX 9533 SOUTHWESTERN BELL 560      
281-351 A Tomball EMS TX 9533 SOUTHWESTERN BELL 560      
281-357 A Tomball EMS TX 9533 SOUTHWESTERN BELL 560      
281-401 A Tomball EMS TX 9533 SOUTHWESTERN BELL 560      
281-516 A Tomball TX 9533 SOUTHWESTERN BELL 560      

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

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