whois https://groups.google.com/g/drag4cu/c/jmUwCJ_Hs8U

Domain:
Turn off cache
Try for webbased whois (don't expect it to work yet)
https://groups.google.com/g/drag4cu/c/jmUwCJ_Hs8U
checking....https://groups.google.com/g/drag4cu/c/jmUwCJ_Hs8U
   $ whois https://groups.google.com/g/drag4cu/c/jmUwCJ_Hs8U
No whois server is known for this kind of object.