Simple, fast tools to look up DNS records, IP addresses and domain information, all in one place.
DNS Tools brings the most common network checks together on a single, clean page. Enter a domain name or an IP address, choose a tool, and get a clear answer in seconds.
It is made for developers, system administrators, website owners and anyone who needs to understand how a domain or an IP address is set up. There is nothing to install, and you do not need an account.
Ten tools, all in one place. Pick the one that matches your question.
Get detailed DNS records for any domain name.
Find location and details for any IP address.
Lookup domain name from an IP address.
Check domain information, expiration and more.
Verify if an IP or domain is blacklisted.
Find the mail servers that receive email for a domain.
Validate the SPF record that protects a domain from spoofing.
Check the DMARC policy that protects a domain's email.
Look up and validate the DKIM key of a domain.
See your public IP address and its location.
Three simple steps from question to answer.
Type a domain name such as example.com, or an IP address such as 8.8.8.8, in the search box.
Select one of the tools, such as DNS Lookup, MX Lookup, SPF Check or IP Lookup, next to the Search button.
The answer appears right on the page, in clear tables and cards, with a helpful message if something goes wrong.
Each tool relies on a public, well-known source.
| Tool | Source |
|---|---|
| DNS Lookup | Public DNS resolvers (Google Public DNS and Cloudflare), queried over HTTPS. Requests are shared between the two for reliability. |
| MX, SPF, DMARC and DKIM checks | The same public DNS resolvers, asking for MX, address and TXT records (including the _dmarc and _domainkey names). SPF Check also follows the domains included in the record. |
| What Is My IP | The address of your connection to this website, with the IP Lookup and reverse DNS sources for its details. |
| Reverse DNS | The same public DNS resolvers, asking for the PTR record of an IP address. |
| IP Lookup | IP geolocation data from ip-api.com: location, network provider and ASN. |
| Domain Tools | RDAP, the modern registration data protocol, using the registry servers listed by IANA. |
| Blacklist Check | Public DNS-based blocklists (DNSBL), checked at the same time. |
A few things that help you read the results with confidence.
Quick answers to common questions.
Either the domain does not exist, or it has no record of the type you asked for. For example, a domain without email has no MX records. DNS Lookup tells you when a domain does not exist at all.
Different DNS resolvers keep answers in memory for different lengths of time, and this site also caches results briefly. Values can therefore differ for a short while after a change.
No. Private and reserved addresses are not public, so no location or reverse DNS data exists for them.
The reverse record is set by whoever controls the IP address, and many addresses simply have none. This is normal and does not mean something is broken.
Registries and registrars hide personal contact details by default to protect privacy. You can still see the registrar, the registration and expiry dates, and the domain status.