Free Network Tools
IP, DNS and browser lookups that run right in your browser.
These free network tools handle the quick lookups that come up when you are setting up a connection, debugging a site or filing a support ticket. Find out what your public IP address is, run an IP lookup to see the approximate location and provider behind any address, check a domain's DNS records, read your browser's user agent string, and see your exact screen resolution and window size. Each one is a single-purpose page that gives you the answer in seconds.
A note on honesty, since it matters here. The tools that only read your own browser, the user agent checker and the screen resolution checker, run entirely on your device with nothing sent anywhere. The lookups that need outside data, finding your public IP, geolocating an address, and reading DNS records, query free public services to do their job, because a browser genuinely cannot answer those alone. IP geolocation in particular is approximate and points at the network, not a person.
Frequently asked questions
Are these network tools free?
Yes, all free with no account and no limits. They are simple lookups and stay that way, with no premium tier waiting behind them.
Do they upload or store my data?
The browser-only tools, user agent and screen resolution, send nothing anywhere. The IP and DNS lookups query free public services to fetch results, and this site does not save what you look up.
Why do IP and DNS lookups need external services?
A browser cannot see its own public IP, geolocate an address or read DNS records on its own. Those answers live on the network, so the tools ask public services (like ipify for your IP and DNS-over-HTTPS for records).
How accurate is the IP location?
Country is usually right, but city is approximate and can be well off for mobile, VPN, business and cloud addresses. Geolocation locates the provider's network, never an individual person.
Do they work on iPhone and Android?
Yes. Every tool runs in any modern mobile browser, so you can check an IP, a user agent or a screen size from your phone.