i wanted to add PTR record, to my domain so the reverse IP is in PTR points to my nameserver.

So on my hosting IP provider i set my nameserver for the IP and it now shows in PTR (i used this tutorial),

but i want to ask, if i need to setup PTR in my DNS domain zone file too? IN PTR ns1.mydomainname.com.

there is no PTR, only A, NS, MX and similar



PTR Records are only added in the in-addr.arpa. zones of the IP owner. But the A and PTR records should match. This means the PTR IN PTR ns1.mydomainname.com.

should have a matching A record in your mydomainname.com DNS zone:

ns1                       IN   A
[~] dig +short ns 77.66.in-addr.arpa.

Is where the PTR record would need to be created, as that is where that in-addr.arpa zone has been delegated to. You will need to contact qwest (or perhaps NBC universal, who the /24 is delegated to from Qwest) to request it.

You can ask if they can use RFC 2317 (http://www.ietf.org/rfc/rfc2317.txt) in order to delegate the PTR to your name servers since it doesn't lay on an octet boundary. but for a single IP address, they probably wont.

  • 1
    I think this is an example IP address. – Emii Khaos Sep 11 '13 at 12:39
  • ahh Could be. Just replace the ip with the correct one and trace the delegation to find out needs to be contacted. – Doon Sep 11 '13 at 12:49

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