Here are three websites that say they have continued the work of Beall's List, which was discontinued due to harassment.
https://clinicallibrarian.wordpress.com/2017/01/23/bealls-list-of-predatory-publishers/
https://beallslist.weebly.com/
https://predatoryjournals.com/
If you have a publisher or a journal that you need to check, I suggest checking all three of these lists.
If you already use one or more of these sites, which do you think is best maintained?