Network tools that tell you about your own connection
Most network questions start with a symptom: a game server nobody can join, a website that loads for everyone but you, broadband that feels slower than the price suggests, or a new domain that still points at the old host. These tools answer those questions directly from your browser, using live lookups rather than cached guesses, and they explain what the result means in plain English.
Start with what is my IP address to see your public IPv4 and IPv6 addresses, provider and approximate location, then run the internet speed test for download, upload, latency and jitter. The port checker tells you whether a port you have forwarded — for Minecraft, CCTV or a home server — is really reachable from the internet. For domains, the DNS lookup shows A, AAAA, MX, TXT and other records, and the WHOIS lookup shows the registrar, creation and expiry dates.
There are also a subnet calculator for IPv4 and IPv6, a MAC address vendor lookup, an HTTP headers and redirect checker, an SSL certificate checker, a WebRTC and VPN leak test and a user-agent parser. We never store what you look up, and we only ever check ports on your own address, never someone else's.