Free network tools
Quick checks that run right in your browser: test your speed, see your address and provider, look up any website, and find out whether a site is down.
Speed test
Check your download, upload and response time in about 20 seconds. No app, no account.
What's my IP
Your public internet address, the provider it belongs to and where the internet thinks you are — instantly.
Which ISP am I on
Find out who actually provides the internet you are using right now, read from the connection itself.
DNS lookup
Look up the addresses and records behind any website name.
Is a website down?
Check whether a website is reachable right now, and how quickly it answers.
Who owns this IP
Find the company behind any IP address or website, its network number and the country it is registered in.
Wi-Fi safety check
Answer five quick questions about the network you are on and get a straight answer, plus what to do about it.
Some checks need the app
Browsers cannot read Wi-Fi signal strength, scan your home network or ping your router. The free Wifify app can, and it explains what it finds in plain words.