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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
972-940 9 Dallas TX 7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552   2017-09-08   
972-942 A Dallas TX 7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-942 3 Dallas TX 7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552   2018-05-29   
972-942 6 Dallas TX 7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552   2018-05-28   
972-942 7 Dallas TX 7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552   2018-07-16   
972-972 6 Dallas TX 7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552   2018-01-22   
972-972 7 Dallas TX 7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552   2018-01-22   

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

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