whois pinboard.opera.com/view/be276851-0451-423f-a1fc-15361bce9b4f/

Domain:
Turn off cache
Try for webbased whois (don't expect it to work yet)
pinboard.opera.com/view/be276851-0451-423f-a1fc-15361bce9b4f/
checking....pinboard.opera.com/view/be276851-0451-423f-a1fc-15361bce9b4f/
   $ whois pinboard.opera.com/view/be276851-0451-423f-a1fc-15361bce9b4f/
No whois server is known for this kind of object.