Free WHOIS Lookup
Look up public domain registration records and registry data in seconds. NerdTools follows WHOIS referrals where available so you can inspect registrar, nameserver, creation, and expiry details from one place.
Common use cases
- Confirm who manages a domain before a migration, purchase, or ownership handoff.
- Check domain registration, renewal, and expiry signals during incident response.
- Compare WHOIS data with DNS, SSL, and reputation results for a broader domain profile.
Frequently asked questions
What does a WHOIS lookup show?
WHOIS records can show registrar, registry, nameserver, creation, update, and expiry details. Some contact details may be redacted by privacy rules.
Can I look up an IP address?
Yes. The scanner accepts public domains and IP addresses, then returns the relevant public WHOIS data when available.