whois pinboard.opera.com/view/650a0f9a-56a5-4690-a4ef-85a17958ead7

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

pinboard.opera.com/view/650a0f9a-56a5-4690-a4ef-85a17958ead7
checking....pinboard.opera.com/view/650a0f9a-56a5-4690-a4ef-85a17958ead7
   $ whois pinboard.opera.com/view/650a0f9a-56a5-4690-a4ef-85a17958ead7
No whois server is known for this kind of object.