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: HSTOTXORDS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
281-225 A Houston TX 2091 ETS TELEPHONE COMPANY, INC. 560      
281-246 A Cypress EMS TX 2091 ETS TELEPHONE COMPANY, INC. 560      
281-430 A Spring EMS TX 2091 ETS TELEPHONE COMPANY, INC. 560      
281-778 A Stafford TX 2091 ETS TELEPHONE COMPANY, INC. 560      
346-368 A Sugar Land TX 2091 ETS TELEPHONE COMPANY, INC. 560      
346-387 A Katy TX 2091 ETS TELEPHONE COMPANY, INC. 560      
832-222 A Richmond-Rosenberg EMS TX 2091 ETS TELEPHONE COMPANY, INC. 560      
832-296 A Spring TX 2091 ETS TELEPHONE COMPANY, INC. 560      
832-349 A Cypress TX 2091 ETS TELEPHONE COMPANY, INC. 560      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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