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Just tried it with some of my own details. Found a domain I forgot I owned on an old reseller I havent used in a while - lol.

On a more serious note - I'm very curious how you get such a long history of domains. i.e. I can see every DNS change and ownership for any domain - I didnt realise that was always available?

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Hi! We acquired 4 companies that have been doing lots of cool data work. We also license and collect our own data to mix in. There's different granularity depending on the data (WHOIS history, Name Server history, DNS record history, technologies used) etc. We're constantly improving it.

The thesis we have is that if you get hacked, it often times is through an old server or satellite domain. We're building tools to help you find the extended surface area where you can be hacked or have downtime. The example of you finding an old domain is a prefect use case.

Just out of curiosity, was one of those companies originally named DeletedDomains.com? They had the full root zone (of the ones now managed by Verisign GRS anyway) since approximately 2001 (my involvement with them was 2003).

hey - no. wwws.io, dnstrails.com were the main ones for this data

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