Robuta

https://regex101.com/library/kJ2yC3?orderBy=LOWEST_SCORE&page=1&search=&filterFlavors=golang&filterFlavors=pcre
Search, filter and view user submitted regular expressions in the regex library. Over 20,000 entries, and counting!
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https://alaskagraphics.org/
orgfqdn
https://aromatoherb.com/
comfqdn
https://www.linode.com/community/questions/10164/how-do-i-determine-my-fqdn
determinefqdnlinodequestions
https://curva1899.com/
comfqdn