NDBC THREDDS Server Catalog https://dods.ndbc.noaa.gov/thredds/catalog/data/stdmet/frfn7/catalog.html

Dataset Size Last Modified
     Folder  frfn7   --
         frfn7.ncml 302.0 bytes 2018-07-20T13:00:01.388Z
         frfn7h2016.nc 39.98 Kbytes 2016-05-24T14:00:00Z
         frfn7h2018.nc 268.9 Kbytes 2018-12-31T23:00:00Z
         frfn7h2019.nc 459.4 Kbytes 2019-12-31T23:00:00Z
         frfn7h2020.nc 257.7 Kbytes 2020-07-17T14:00:00Z

National Data Buoy Center THREDDS Server at National Data Buoy Center see Info
THREDDS Data Server [Version 4.6.14 - 2019-07-23T11:04:31-0600] Documentation