What's My IP

Commercial "what is my IP" pages answer a one-line question and then charge for it in ads, trackers, cookie walls and a log with your address in it. This one answers the question, adds the numbers a developer actually struggles to read off a device, and keeps no record of the visit.

What it shows you

• Your IP address, which protocol you arrived over, and the network that announces it: ASN, organisation, BGP prefix and registry.
• The measurements that are awkward to read off a phone: viewport size, real screen size, device pixel ratio, and what a canvas element resolves to.
• A guess at which device that screen belongs to, compared against a list of known models — offered as a possibility, never as an identification.
• A JSON endpoint and a plain-text one, so the same answer works from curl or from a script.

What happens to your data

Nothing is stored. There is no database, no session, no cookie and no log of who asked — which is also why there is nothing here to log in to.

• This page, requested from this site. Like every web server it sees your address, your user agent and your language preference for as long as it takes to answer — and writes none of it down.
• The J-Tools bar at the top, loaded from id.j-tools.net: a script, a stylesheet, the suite logo and this tool's own name and colour. No cookies, no analytics.
• One DNS lookup to Team Cymru, made by this server rather than by your browser, to name the network your address belongs to.
• Nothing from the screen, canvas or device sections. Those are measured in your browser and stay there — the page never posts them anywhere.
• Nothing else at all: no ads, no trackers, no third-party fonts or scripts, no cookies, no local storage, no request log, no account.