whois defcrypt.com/en/blog/nda-in-a-crypto-investigation

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defcrypt.com/en/blog/nda-in-a-crypto-investigation
checking....defcrypt.com/en/blog/nda-in-a-crypto-investigation
   $ whois defcrypt.com/en/blog/nda-in-a-crypto-investigation
No whois server is known for this kind of object.