Free IP & Domain Tools

Look up IP addresses, check DNS records, run Whois lookups, and check domain availability — free, with no signup required.

IP Address Tools

Check your own address with What Is My IP, resolve any IP with IP Address Lookup, find every domain sharing an IP with Reverse IP Domain Checker, check a specific IP range with Class C IP Checker, or check whether an IP appears on a spam blacklist with Blacklist Lookup.

What Is My IPIP Address LookupReverse IP Domain CheckerClass C IP CheckerBlacklist Lookup

Domain Lookup Tools

Resolve a domain to its IP with Domain to IP, look up registration details with Whois Domain Lookup, check DNS records with DNS Records Checker, and identify a site's hosting provider with Hosting Checker or Domain Hosting Checker. Run a quick safety check with Suspicious Domain Checker.

Domain to IPWhois Domain LookupDNS Records CheckerHosting CheckerDomain Hosting CheckerSuspicious Domain Checker

Domain Availability Tools

Check whether a domain name is available to register with Domain Availability Checker, or check several at once with Bulk Domain Availability Checker.

Domain Availability CheckerBulk Domain Availability Checker

How to Use These Tools Together

1. Verify DNS after changes. Use DNS Records Checker and Domain to IP to confirm updates propagated correctly after switching hosting or email providers.
2. Research before buying. Check Domain Availability Checker and Whois Domain Lookup before purchasing or negotiating for a domain.
3. Investigate suspicious activity. Combine Blacklist Lookup, Suspicious Domain Checker, and Whois Domain Lookup as part of basic due diligence on an unfamiliar domain.

Frequently Asked Questions

Are these IP and domain tools free?

Yes, all tools on this page are free with no signup required.

Why does Whois Domain Lookup show a privacy service instead of the real owner?

Most domains now use WHOIS privacy protection by default, which replaces the real registrant's contact details with the registrar's generic proxy information.

What does Reverse IP Domain Checker show?

It lists other domains hosted on the same IP address, useful for understanding shared hosting setups or investigating a site's infrastructure.

Does a Blacklist Lookup guarantee an IP is safe?

No. It checks against known spam and abuse blacklists, which is a useful signal but not a complete guarantee of safety.

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