[antoinealb]

I don't understand the issue you are describing. You can already scan the entire ipv4 space for cheap with tools like zmap[0]. How does a premade list help ?

In addition, I would expect such a DB to go stale very quickly.

[0] https://zmap.io/

[nerdbaggy]

What is the legality of scanning large subsets that you don’t control?

[hedora]

I think it is generally acceptable for public networks, but eBay is using webrtc to bypass firewalls and then scanning private networks.

That’s illegal in most circumstances (at least in the US).

[whydoyoucare]

Any further pointer on the "illegal" aspect? Thanks.