They appear to piece together data from various sources. As a result, they have a very complete domain -> IP history.
TODO reverse IP? The fact that they don't seem to have it suggests that they are just making historical reverse IP requests to a third party via some API.
Account creation blacklists common email providers such as gmail to force users to use a "corporate" email address. But using random domains like works fine.
Their data seems to date back to 2008 for our searches.

Articles by others on the same topic (0)

There are currently no matching articles

See all articles in the same topic