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I just realised how online adult entertainment has the most redundancy of any Internet service category, bar none.



You’re right :)

  $ dig @8.8.8.8 ns +short pornhub.com
  ns2.p44.dynect.net.
  ns3.p44.dynect.net.
  ns4.p44.dynect.net.
  sdns3.ultradns.net.
  sdns3.ultradns.com.
  sdns3.ultradns.org.
  sdns3.ultradns.biz.
  ns1.p44.dynect.net.
PornHub has better DNS redundancy than Github and Twitter.


Amazon does too:

  C:\>nslookup

  > set type=ns
  > amazon.com

  Non-authoritative answer:
  amazon.com      nameserver = ns3.p31.dynect.net
  amazon.com      nameserver = pdns1.ultradns.net
  amazon.com      nameserver = ns4.p31.dynect.net
  amazon.com      nameserver = pdns6.ultradns.co.uk
  amazon.com      nameserver = ns1.p31.dynect.net
  amazon.com      nameserver = ns2.p31.dynect.net


I'm sure this is to circumvent blacklisting rather than for this scenario.


I can’t think of any type of blacklisting this would prevent. Care you elaborate?




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