whois medium.com/@joaokepler/

Domain:
Turn off cache
Try for webbased whois (don't expect it to work yet)

medium.com/@joaokepler/
checking....medium.com/@joaokepler/
   $ whois medium.com/@joaokepler/ (cached 10.07.25, 13:58:04)
No whois server is known for this kind of object.