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Free Network & Info Tools

Look up DNS records and WHOIS data, check HTTP headers, and see your public IP, user agent and screen resolution.

Frequently asked questions

Are the network & info tools free?
Yes — every tool in this category is free to use, with no sign-up and no usage limits.
Do I need to install anything?
No. Everything runs in your browser (or through our server for the tools that need one) — no downloads, no extensions, no account.
Is my data kept after I use a tool?
No. Files and inputs are processed to produce your result and are not stored afterward.