Find Reverse-DNS/PTR using dig, nslookup, host

Reverse-DNS/PTR is used by mail servers. It is used to map an IP address to FQDN or hostname.

To find Reverse DNS record for an IP address, run

nslookup find PTR record

In this example IP have a Reverse DNS record

Using dig

You can also use dig command to find PTR record for an IP address.

dig ptr record

Using host

host command to find ptr record


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