whois dudoser.com/user/pvchoe4/

Domain:
Turn off cache
Try for webbased whois (don't expect it to work yet)
dudoser.com/user/pvchoe4/
checking....dudoser.com/user/pvchoe4/
   $ whois dudoser.com/user/pvchoe4/ (cached 31.01.26, 08:34:01)
No whois server is known for this kind of object.