Free tools
Network tools
Handy utilities for troubleshooting a connection or a website, no sign-up needed.
What’s my IP address?
See the public IP address and browser details websites can see when you connect.
Open tool →DNS lookup
Look up A, AAAA, MX, NS, TXT and CNAME records for any domain.
Open tool →HTTP header checker
Fetch a URL and inspect its status code, redirect target and response headers.
Open tool →SSL certificate checker
Check a site’s HTTPS certificate: who issued it, when it expires and whether it’s valid.
Open tool →Website response time
Measure how fast a site responds with five quick requests from our network.
Open tool →What’s my user agent?
See the browser, system and user-agent string your device sends to websites.
Open tool →