whois themes.trac.wordpress.org/ticket/11234

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Turn off cache
Try for webbased whois (don't expect it to work yet)
themes.trac.wordpress.org/ticket/11234
checking....themes.trac.wordpress.org/ticket/11234
   $ whois themes.trac.wordpress.org/ticket/11234 (cached 07.11.25, 20:11:13)
No whois server is known for this kind of object.