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
512-216 2 San Marcos TX 903C ONVOY, LLC - TX 558   2007-06-23   
512-357 3 Martindale TX 903C ONVOY, LLC - TX 558   2016-03-28   
512-357 7 Martindale TX 903C ONVOY, LLC - TX 558   2016-03-28   
512-488 0 Fentress TX 903C ONVOY, LLC - TX 558   2018-12-15   
512-488 3 Fentress TX 903C ONVOY, LLC - TX 558   2017-03-24   
512-488 4 Fentress TX 903C ONVOY, LLC - TX 558   2018-03-23   
512-488 5 Fentress TX 903C ONVOY, LLC - TX 558   2018-09-14   
512-488 6 Fentress TX 903C ONVOY, LLC - TX 558   2018-09-14   
512-938 3 San Marcos TX 903C ONVOY, LLC - TX 558   2008-04-25   
512-938 5 San Marcos TX 903C ONVOY, LLC - TX 558   2025-09-27   
512-938 6 San Marcos TX 903C ONVOY, LLC - TX 558   2025-10-26   
512-938 7 San Marcos TX 903C ONVOY, LLC - TX 558   2025-10-26   
737-214 A San Marcos TX 903C ONVOY, LLC - TX 558      
737-214 0 San Marcos TX 903C ONVOY, LLC - TX 558   2017-05-17   
737-214 1 San Marcos TX 903C ONVOY, LLC - TX 558   2017-05-17   
737-214 2 San Marcos TX 903C ONVOY, LLC - TX 558   2017-05-17   
737-214 3 San Marcos TX 903C ONVOY, LLC - TX 558   2017-05-17   
737-214 4 San Marcos TX 903C ONVOY, LLC - TX 558   2017-05-17   
737-214 5 San Marcos TX 903C ONVOY, LLC - TX 558   2017-05-17   
737-214 6 San Marcos TX 903C ONVOY, LLC - TX 558   2017-05-17   
737-214 7 San Marcos TX 903C ONVOY, LLC - TX 558   2017-05-17   
737-214 8 San Marcos TX 903C ONVOY, LLC - TX 558   2017-05-15   
737-214 9 San Marcos TX 903C ONVOY, LLC - TX 558   2017-05-17   
737-221 0 San Marcos TX 903C ONVOY, LLC - TX 558   2018-11-05   
737-221 2 San Marcos TX 903C ONVOY, LLC - TX 558   2018-11-05   
737-221 3 San Marcos TX 903C ONVOY, LLC - TX 558   2018-12-15   
737-221 4 San Marcos TX 903C ONVOY, LLC - TX 558   2018-12-15   
737-221 5 San Marcos TX 903C ONVOY, LLC - TX 558   2018-11-05   
737-221 6 San Marcos TX 903C ONVOY, LLC - TX 558   2018-11-05   
737-250 A Martindale TX 903C ONVOY, LLC - TX 558      
737-250 0 Martindale TX 903C ONVOY, LLC - TX 558   2018-04-22   
737-250 6 Martindale TX 903C ONVOY, LLC - TX 558   2020-08-16   
737-250 7 Martindale TX 903C ONVOY, LLC - TX 558   2020-08-16   
737-250 8 Martindale TX 903C ONVOY, LLC - TX 558   2020-08-16   
737-250 9 Martindale TX 903C ONVOY, LLC - TX 558   2020-11-23   
737-266 9 San Marcos TX 903C ONVOY, LLC - TX 558   2020-11-22   
737-303 4 San Marcos TX 903C ONVOY, LLC - TX 558   2021-12-24   
737-303 5 San Marcos TX 903C ONVOY, LLC - TX 558   2021-12-24   
737-315 3 San Marcos TX 903C ONVOY, LLC - TX 558   2022-04-02   
737-315 4 San Marcos TX 903C ONVOY, LLC - TX 558   2022-04-02   
737-315 5 San Marcos TX 903C ONVOY, LLC - TX 558   2022-04-02   
737-315 8 San Marcos TX 903C ONVOY, LLC - TX 558   2024-05-04   
737-335 0 San Marcos TX 903C ONVOY, LLC - TX 558   2024-05-04   
737-337 A Fentress TX 903C ONVOY, LLC - TX 558      
737-337 4 Fentress TX 903C ONVOY, LLC - TX 558   2021-03-14   
737-337 5 Fentress TX 903C ONVOY, LLC - TX 558   2021-03-14   
737-337 8 Fentress TX 903C ONVOY, LLC - TX 558   2021-04-30   
737-344 A San Marcos TX 903C ONVOY, LLC - TX 558      
737-344 3 San Marcos TX 903C ONVOY, LLC - TX 558   2020-12-27   
737-344 4 San Marcos TX 903C ONVOY, LLC - TX 558   2020-12-27   

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

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