Shodan keeps a running record of what it finds on the Internet, so it's not scanning from within AWS. There are a few other services that do the same thing. I k

Shodan keeps a running record of what it finds on the Internet, so it's not scanning from within AWS. There are a few other services that do the same thing. I kinda like the idea of using masscan and doing the leg work yourself to get a feel for it, though.