Home / server / Questions / 538058
In Process
16851556
Asked: 2013-09-12 04:19:27 +0800 CST

PTR record only added on IP owner side? no in DNS Zone files?

  • 772

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

?

domain-name-system

2 Answers

  1. 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
    • 4 
  2. [~] 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.

    • 2