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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?

99.88.77.66.in-addr.arpa. IN PTR ns1.mydomainname.com.

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

?

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2 Answers 2

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

99.88.77.66.in-addr.arpa. IN PTR ns1.mydomainname.com.

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

ns1                       IN   A 66.77.88.99
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[~] dig +short ns 77.66.in-addr.arpa.
authns2.qwest.net.
authns1.qwest.net.

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.

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1  
I think this is an example IP address. –  Pazi ツ 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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