disclose.io

@disclose.io

lookup.disclose.io passed 45,000 lookups. Our dashboard says 143,690 requests. Most of that is MCP crawlers saying hello, so after basic bot filtering we call it 45,494. 41% of 2,393 real assets resolved to a disclosure route. The rest is most of the internet having nowhere to send a report.

Look up an IP address in lookup.disclose.io and the answer is whoever is actually using it. Verified certificate subject, live redirects, and IP-hosted security.txt come first; the registered network holder and BGP origin are fallbacks; RPKI is routing context, never ownership.

Bild

The reporting contact is the first thing you see in a lookup.disclose.io result. Attribution and the evidence chain sit one section down. New below that: Historical Breadcrumbs, what the public web archive recorded for the domain, re-checked live and labeled as a lead, not ownership.

Bild

When a site's current security.txt names its disclosure platform, that wins. lookup.disclose.io drops conflicting program links from older third-party catalogs and keeps every platform the site itself publishes. No security.txt, or an expired one? Nothing gets suppressed.

Bild

security.txt results in lookup.disclose.io reflect what a site actually publishes. A TLS hostname edge case made valid files look missing on some very large sites. Fixed: /.well-known/ is checked first, an unreachable probe is not "absent," and expired files stay visible, labeled.

Bild

"Complete" in lookup.disclose.io means one thing: a reporting route qualified to the actual owner of the asset. A publisher, a repo host, a parent company, or a disclosure platform is useful context. As of September, a parent brand is context too, not disclosure scope. #AppSec

Bild

Plenty of organizations publish a solid disclosure policy that automated tools never find: behind bot protection, or deep in a help-center sitemap. lookup.disclose.io reaches those. Bunnings, TCL, and Motorola Solutions all publish one, and lookup finds it.

Bild

If you're arriving for DEF CON, everything we make is collected at go.disclose.io: the program directory, the security-contact lookup, safe-harbor terms, and the policy generators. It's all open source, vendor-neutral, and free.