Russia's media watchdog, Roskomnadzor, has blocked access to two of the world's largest pornography websites.
Internet service providers had until Tuesday to implement the ban.
The sites now redirect to a message explaining they have been blocked "by decision of public authorities".
In 2015, the authorities banned 11 popular pornography websites, saying many failed to protect children "from information harmful to their health".
The decision was made following two separate court rulings, which said the websites "spread pornography".
Sexually explicit content is not outlawed in Russia, but the law bans "the illegal production, dissemination and advertisement of pornographic materials and objects".
Read the full article on BBC here.
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