Go to Shodan and create an account
You need an account to lookup SSH IP's, make sure to make one.
Dont search for 22 search for SSH.
If you want to find the most accurate list search for SSH, not Telnet or anything else they are not updated as often.
Find a unknown ISP/ASN for better lists (Bigger companies like Digital Ocean & Amazon have to much protection)
The more Vulns the better, if you choose a provider with less Vunlns and scan you could get your server banned faster.
The more ASN's you search at a time the bigger list you make, make sure to get al least 3-7 ASN's at a time. If you only use 1 you many only get a few IP's like I did.
Go to Hacker Target Lookup paste your ASN number(s) and search
Go to Online Notepad or download Notepad++
Enter :: into the find and replcace bar, then hit remove all of them (this filters out all of the IPv6'a)
As made to by Github so I dont get banned I have to include this disclaimer: I am not responsible for anything you do with this tutorial, by following this tutorial you agree to this disclaimer.