whois pinboard.opera.com/view/8cf0a49d-5081-43d8-bb08-af09873671e8/

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Try for webbased whois (don't expect it to work yet)
pinboard.opera.com/view/8cf0a49d-5081-43d8-bb08-af09873671e8/
checking....pinboard.opera.com/view/8cf0a49d-5081-43d8-bb08-af09873671e8/
   $ whois pinboard.opera.com/view/8cf0a49d-5081-43d8-bb08-af09873671e8/ (cached 31.03.25, 01:54:05)
No whois server is known for this kind of object.