
There is a very useful tool called “Forum Spam List Checker” made by "Gunner" a moderator of the site "StopForumSpam", which can check the details of any suspect users in many blacklist sites.
(Due to the amount of blacklists it references it is useful for more than just forums.)
To get the most from it you will need to get free API keys for some of the services
Instructions https://www.gunnerinc.com/fslc.htm
Download https://www.gunnerinc.com/fslc/fslc328.zip (65 KB)
Support https://www.stopforumspam.com/forum/vie ... hp?id=5399
There is an open sourced v4 beta but it is not as functional.
https://github.com/GunnerInc/fslc