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: LFKNTXXA6MD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
936-869 9 Diboll TX 903C ONVOY, LLC - TX 560   2019-12-20   
936-877 8 Alto TX 903C ONVOY, LLC - TX 560   2021-04-12   
936-879 6 Alto TX 903C ONVOY, LLC - TX 560   2019-12-20   
936-888 2 Hudson (Angelina) TX 903C ONVOY, LLC - TX 560   2020-08-22   
936-888 3 Hudson (Angelina) TX 903C ONVOY, LLC - TX 560   2020-08-22   
936-955 A Lufkin TX 903C ONVOY, LLC - TX 560      
936-955 3 Lufkin TX 903C ONVOY, LLC - TX 560   2021-02-18   
936-955 5 Lufkin TX 903C ONVOY, LLC - TX 560   2020-12-19   
936-955 6 Lufkin TX 903C ONVOY, LLC - TX 560   2020-12-19   
936-999 3 Zavalla TX 903C ONVOY, LLC - TX 560   2021-04-12   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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