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dojo999

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1.0.0.1 and 2606:4700:4700::1001 return the same PTR info as 1.1.1.1 and 2606:4700:4700::1111 do.

  $ host 1.0.0.1
  1.0.0.1.in-addr.arpa domain name pointer 1dot1dot1dot1.cloudflare-dns.com.

  $ host 2606:4700:4700::1001
  1.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.7.4.0.0.7.4.6.0.6.2.ip6.arpa domain name pointer 1dot1dot1dot1.cloudflare-dns.com.
I would've expected these to return 1dot0dot0dot1.cloudflare-dns.com.
Ten seconds of math 12 years ago

For a moment I had the idea it was speeding up, but later on I felt like it was just an illusion. Got to 5661 before stopping.