National Centers for Environmental Information / National Operational Model Archive and Distribution System Catalog https://www.ncei.noaa.gov/thredds/catalog/model-gfs-004-files/202010/20201019/catalog.html

Dataset Size Last Modified
     Folder  20201019   --
         GFS Grid 4 2020-10-19 18:00 UTC fct:006.grb2 99.88 Mbytes 2020-10-20T08:40:29.667Z
         GFS Grid 4 2020-10-19 18:00 UTC fct:003.grb2 99.38 Mbytes 2020-10-20T08:40:29.762Z
         GFS Grid 4 2020-10-19 18:00 UTC fct:000.grb2 90.81 Mbytes 2020-10-20T08:40:30.175Z
         GFS Grid 4 2020-10-19 12:00 UTC fct:006.grb2 99.91 Mbytes 2020-10-19T20:40:37.514Z
         GFS Grid 4 2020-10-19 12:00 UTC fct:003.grb2 98.95 Mbytes 2020-10-19T20:40:36.541Z
         GFS Grid 4 2020-10-19 12:00 UTC fct:000.grb2 90.83 Mbytes 2020-10-19T20:40:39.359Z
         GFS Grid 4 2020-10-19 06:00 UTC fct:006.grb2 99.81 Mbytes 2020-10-19T20:40:37.787Z
         GFS Grid 4 2020-10-19 06:00 UTC fct:003.grb2 98.68 Mbytes 2020-10-19T20:40:41.149Z
         GFS Grid 4 2020-10-19 06:00 UTC fct:000.grb2 90.66 Mbytes 2020-10-19T20:40:36.827Z
         GFS Grid 4 2020-10-19 00:00 UTC fct:006.grb2 100.0 Mbytes 2020-10-19T08:40:31.628Z
         GFS Grid 4 2020-10-19 00:00 UTC fct:003.grb2 99.24 Mbytes 2020-10-19T08:40:33.800Z
         GFS Grid 4 2020-10-19 00:00 UTC fct:000.grb2 91.51 Mbytes 2020-10-19T08:40:32.768Z

NCEI-NC THREDDS Server at NCEI see Info
Documentation