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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.

What Is My IP

Find your public IP address instantly, plus basic browser and connection info.

What Is My User Agent

See your browser's user agent string, parsed into browser and OS.

What Is My Screen Resolution

See your screen resolution, pixel ratio and colour depth, live.

DNS Lookup

Look up A, AAAA, MX, TXT, NS, CNAME and SOA records for any domain.

WHOIS Lookup

Domain registration info — registrar, dates, name servers, status codes, raw record.

HTTP Headers Checker

See exactly what request headers the server received from your browser.

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.