Again, IANAL, but a decision whether to add a domain or email address to one of these lists is not a creative decision, it's a mechanical boolean decision. It's a matter of fact, not of creativity or subjective inclusion. The regex pattern they used might be an example of a creative work, but the list of matches is probably not.

In the same sense, recipes are not copyrightable. The thought that goes into composing them may be creative, but the list of ingredients itself is not subject to copyright.