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: AUSTTXGRDS3

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
512-686 9 Georgetown TX 139F WORLDCALL INTERCONNECT INC. 558   2008-12-13   
512-822 A Austin TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558      
512-822 4 Austin TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558   2013-03-25   
512-888 0 Austin TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558   2004-05-21   
737-222 A Austin TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558      
737-222 2 Austin TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558   2013-10-10   
737-248 4 Kyle TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558   2018-08-02   
737-333 A Austin TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558      
737-333 3 Austin TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558   2013-07-01   
737-444 A Georgetown TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558      
737-444 4 Georgetown TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558   2013-07-01   
737-666 A Elgin TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558      
737-666 6 Elgin TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558   2013-07-01   
737-777 A Leander TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558      
737-777 1 Leander TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558   2013-09-02   
737-777 4 Leander TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558   2013-09-02   
737-777 5 Leander TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558   2013-09-02   
737-777 7 Leander TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558   2013-07-01   
737-888 A Taylor TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558      
737-888 8 Taylor TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558   2013-07-01   
737-999 A Buda TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558      
737-999 9 Buda TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558   2013-07-01   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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