Reverse DNS: 172.67.165.32
Enter an IP address or a domain to find the hostname its server reports. The hostname often names the hosting company, and mail servers need a matching one to avoid the spam folder.
Try: 8.8.8.8 · 1.1.1.1 · wikipedia.org
No reverse DNS (PTR) record for 172.67.165.32
Checked Thu, 12 Nov 2026 14:47:58 UTC.
- IP address
- 172.67.165.32
- PTR query
- 32.165.67.172.in-addr.arpa
- Hostname
- none
- Forward-confirmed
- -
What reverse DNS is
Normal DNS turns a name into an IP. Reverse DNS turns an IP back into a name, using a PTR record that the owner of the IP block (your host or ISP) controls, not the domain owner. That's why hosting checkers use it: a PTR like server123.hostgator.com names the host even when nothing else does.
Why it matters for email
Mail servers check that the sending IP has a PTR record, and that the hostname resolves back to the same IP ("forward-confirmed reverse DNS"). If it doesn't, mail is often rejected or sent to spam. On a VPS or dedicated server you set the PTR in your host's control panel; on shared hosting the host handles it.
FAQ
How do I do a reverse DNS lookup?
Enter the IP address above, or a domain to look up its server's IP first. On a computer, nslookup 8.8.8.8 or dig -x 8.8.8.8 does the same.
Who sets the reverse DNS record?
Whoever owns the IP address: your hosting company or internet provider. On most VPS plans you can set it yourself in the control panel.
What is forward-confirmed reverse DNS?
The IP's PTR hostname resolves back to the same IP. Mail servers use it as a basic sign that a sender is legitimate.
Does reverse DNS affect my website?
Not for visitors. It matters for sending email and for logs and security tools that label traffic by hostname.
CHANGING HOSTS?
DNS is where most migrations go wrong. Follow the hosting switch checklist, lower your TTL a day before, and use the propagation checker after the switch. Comparing new hosts? See real renewal prices.