This page explains how each tool on this site works, what the results mean, and answers the questions people ask most often.
Open the homepage — the "IPv4 Address / IPv6 Address" shown at the top of the card is the public address assigned by your carrier. If your network supports dual stack you will see both; mobile data and home broadband usually show different addresses. Country, city, ISP and AS number are listed as well.
IPv4 is a 32-bit address (e.g. 203.0.113.5) and the global pool is exhausted; IPv6 is 128-bit (e.g. 2001:db8::1) and effectively unlimited. Many carriers prefer IPv6 on new networks and translate through a gateway when reaching IPv4-only sites. Seeing both means your network is dual stacked, which is a good thing.
IP geolocation relies on carrier registration data and third-party databases, so accuracy is city-level at best. With a proxy, VPN, corporate line or mobile data you will usually see the exit node instead. A wrong city does not mean the data is broken — it means you are not at that IP's registered location.
NAT is how a router maps many internal devices to one public address. The stricter the NAT (for example symmetric), the harder it is to punch a direct connection between two peers, so online games, voice calls and P2P downloads fail more often or feel laggy.
WebRTC uses STUN to discover your real network address for peer-to-peer traffic, and it runs over UDP — many proxies only cover TCP by default. So even behind a proxy, WebRTC can still reveal your real IP. If the test shows an address you did not expect, you have a leak.
Before connecting to a domain, its name must be resolved to an IP. If those queries go to your carrier's resolver instead of an encrypted or proxied one, a third party can see which domains you visit even when the content is encrypted.
Canvas/WebGL fingerprints use tiny rendering differences combined with UA, timezone, resolution and CPU cores to identify your browser without cookies. Preventing it completely is hard: disabling JavaScript or using an anti-fingerprint browser works but costs functionality.
For a domain: registrar, registration/expiry dates, name servers and registrant contact (most domains use privacy protection). For an IP: the owning organisation, netblock and abuse contact.
Lower RTT is better: under 50ms feels great, above 200ms feels laggy. Results depend on physical distance, peering quality between carriers and your current network load — run the test a few times and look for a stable value.
Lookups are processed at the edge node; this site does not store your results together with your identity. See the privacy policy for how analytics and advertising services handle data.
Yes. The page is responsive and every check is available on a phone; some checks such as Canvas fingerprinting behave slightly differently on mobile browsers, which is expected.
Use the Contact page and include the page link, an approximate time, your network type (broadband / mobile / proxy) and browser version. IP data comes from third-party databases and some netblocks lag behind; I verify reports manually.