whois doingtheseo.s3.us-east-005.backblazeb2.com/index.html/

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Try for webbased whois (don't expect it to work yet)
doingtheseo.s3.us-east-005.backblazeb2.com/index.html/
checking....doingtheseo.s3.us-east-005.backblazeb2.com/index.html/
   $ whois doingtheseo.s3.us-east-005.backblazeb2.com/index.html/
No whois server is known for this kind of object.