On: ‘Extremely aggressive’ internet censorship spreads in the world’s democracies

[_l4lu]

So Russia's censor meets your stated requirements, I think. There is an official publicly visible blocklist that includes a justification for each blocked site: http://blocklist.rkn.gov.ru/

There is a procedure for challenging a decision to block. All the content on that list is blocked in accordance with some law, it's just that the laws themselves are questionable...