SEOTools.info / Tools / IP Address & Reverse DNS Lookup
IP Address & Reverse DNS Lookup
Resolve a domain to its IP addresses (IPv4 & IPv6) and see the reverse-DNS (PTR) for each.
We resolve the host and run a PTR lookup on each IP.
Next step: DNS Lookup →
About the IP Address Lookup
This tool resolves a domain to its IP addresses and runs a reverse-DNS (PTR) lookup on each one, so you can see exactly which servers a hostname points to — handy for verifying hosting moves or CDN setups.
What this tool checks
- Resolves both IPv4 and IPv6 addresses
- Runs a reverse-DNS (PTR) lookup for each IP
- Reveals whether a site sits behind a CDN or load balancer
Frequently asked questions
What is reverse DNS (PTR)?
It maps an IP back to a hostname — the opposite of a normal lookup. Mail servers use it to check a sender's legitimacy.
Why do multiple IPs show?
Large sites and CDNs serve the same hostname from many IPs for speed and redundancy.
Monitor uptime & domains for real
Bulk domain + WHOIS checks and live site monitoring inside the panel.