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Reverse DNS / PTR Lookup

Run a reverse DNS lookup to find PTR records and hostnames linked to an IP address.

What this reverse DNS lookup checks

Reverse DNS lookup checks the PTR record for an IP address and returns the hostname associated with that address when one is configured.

Common reverse DNS tasks

  • Verify PTR records for mail servers
  • Troubleshoot DNS and hosting configuration
  • Identify the hostname behind an IPv4 or IPv6 address
  • Check reverse DNS before email deliverability tests

Related network tools

DNS lookupWhois lookupPing test

How to use?

1
1

Enter the IP address you want to check.

2
2

Click the "Check" button.

3
3

View the domain names associated with the IP.

Frequently Asked Questions

What is Reverse DNS (PTR)?

Reverse DNS is a query used to convert an IP address into a domain name. It is the opposite of a standard DNS (domain-to-IP) query.