whois pinboard.opera.com/view/40269f74-8b5d-43bd-b297-31f30189f75c/

Domain:
Turn off cache
Try for webbased whois (don't expect it to work yet)
pinboard.opera.com/view/40269f74-8b5d-43bd-b297-31f30189f75c/
checking....pinboard.opera.com/view/40269f74-8b5d-43bd-b297-31f30189f75c/
   $ whois pinboard.opera.com/view/40269f74-8b5d-43bd-b297-31f30189f75c/
No whois server is known for this kind of object.