Tools
Free network and privacy tools that run in your browser.
Check your connection
- What is my IPv6 address?Check whether your connection supports IPv6 and see your IPv6 and IPv4 addresses.
- What is my ISP?See which internet provider and network your connection comes from right now.
- What is my user agent?See the user agent string your browser sends to every website, and what it says about your device.
- What is my screen resolution?See your screen resolution, pixel ratio, and browser window size. Updates as you resize.
- WebRTC leak testCheck whether your browser reveals your real IP address while you use a VPN.
- Your network diaryKeep a private record of your internet's response time and speed over time, spot slow evenings, and export it for your provider.
Troubleshoot
- Fix my internetFind out why your internet is slow or unstable. We test your connection, explain what's wrong, and guide you through fixes step by step.
- Is it down? Website status checkerCheck whether a website is down for everyone or just you. We test it from Cloudflare's global network and show the response time.
- Open port checkerCheck whether a port is open on your own internet connection, for game servers, cameras, remote desktop, and port forwarding.
- Who owns this IP? IP address lookupLook up who owns any IP address using official registry records: the organization, network range, and where to report abuse.
- Email deliverability checkerFind out why your emails go to spam. Check a domain's SPF, DKIM, DMARC, and MX records, with plain-language fixes.
Stay safe
- Security checkupGet your personal security score in two minutes. Pip checks your browser and connection, asks a few quick questions, and shows what to fix.
- Has my password been leaked?Check if a password appeared in a data breach without revealing it. Your password never leaves your device; only part of a scrambled code is sent.
- Spot the scam: daily gameCan you spot the scam? A daily game with four realistic texts, emails, and links. Learn the clues, build a streak, and share your score.
Network tools
- Internet speed calculatorFind out how much internet speed your home needs for streaming, gaming, video calls, and working from home.
- Subnet calculatorFind the network, broadcast address, host range, and mask for any IPv4 subnet.
- DNS lookupCheck a domain's A, AAAA, MX, TXT, NS, CNAME, and CAA records.
- IP address checker and converterSee whether an IP is private or public, and convert it to binary, hex, or a number.
- Password generatorCreate strong, random passwords in your browser. Nothing is sent or saved.
- Wi-Fi QR code generatorTurn your Wi-Fi name and password into a QR code guests can scan to join. Made in your browser; your password never leaves your device.
- IP address API for developersGet your public IP from the command line or your code: plain text for scripts, JSON for apps. Free, fast, and no sign-up needed.