About IPChecks
IPChecks is a free collection of IP and network tools that run entirely in your browser. No accounts, no sign-ups, no tracking — just fast, reliable network diagnostics whenever you need them.
What is IPChecks?
IPChecks.app offers a suite of free online tools for working with IP addresses and network diagnostics: checking your public IP, DNS lookups, WHOIS queries, HTTP header inspection, WebRTC leak tests, blacklist checks, a subnet calculator, IPv6 expansion and reverse DNS. Everything runs client-side in your browser — the tools fetch live data over public APIs and never route your information through our own servers.
Why it exists
The web is full of network tools that bury you in ads, force sign-ups, or log every lookup you make. IPChecks was built to be the opposite: a straightforward, privacy-first alternative where a tool simply does its job and gets out of your way. Whether you are a developer debugging an API, a system administrator checking DNS, or just curious what your ISP knows about you, the tools are here to answer the question directly.
Who is behind it
IPChecks is built and maintained by Aren Breur, an independent developer who runs a small portfolio of free web tools. You can reach Aren directly at aren2connect@gmail.com.
No tracking
IPChecks does not collect, store, or sell personal data. We set no tracking cookies of our own and run no analytics. Your IP address is detected in your browser via public third-party APIs and is never transmitted to us. The only cookies that may appear come from Google AdSense, which keeps this site free to use — see our Privacy Policy for full details.
Our tools
Get in touch
Found a bug, have an idea for a new tool, or just want to say hi? We'd love to hear from you — we reply within 1–2 business days.