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: SHMNTXXASMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
903-551 7 Gunter TX 903C ONVOY, LLC - TX 552   2020-07-07   
903-551 8 Gunter TX 903C ONVOY, LLC - TX 552   2022-12-21   
903-564 0 Whitesboro TX 903C ONVOY, LLC - TX 552   2016-04-11   
903-564 1 Whitesboro TX 903C ONVOY, LLC - TX 552   2016-04-11   
903-587 5 Leonard TX 903C ONVOY, LLC - TX 552   2020-08-20   
903-627 2 Van Alstyne TX 903C ONVOY, LLC - TX 552   2016-04-04   
903-627 4 Van Alstyne TX 903C ONVOY, LLC - TX 552   2016-04-04   
903-745 A Howe TX 903C ONVOY, LLC - TX 552      
903-745 4 Howe TX 903C ONVOY, LLC - TX 552      
903-961 1 Ector TX 903C ONVOY, LLC - TX 552   2016-04-14   
903-961 6 Ector TX 903C ONVOY, LLC - TX 552   2016-04-14   
903-989 3 Trenton TX 903C ONVOY, LLC - TX 552   2020-07-07   
903-989 4 Trenton TX 903C ONVOY, LLC - TX 552   2020-07-07   
903-990 1 Bonham TX 903C ONVOY, LLC - TX 552   2021-02-01   
903-990 2 Bonham TX 903C ONVOY, LLC - TX 552   2021-02-01   
903-996 A Leonard TX 903C ONVOY, LLC - TX 552      
903-996 2 Leonard TX 903C ONVOY, LLC - TX 552   2021-03-07   
903-996 3 Leonard TX 903C ONVOY, LLC - TX 552   2021-03-07   

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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