The Russian communications regulator, Roskomnadzor, has blocked IP addresses belonging to Google and Amazon in a bid to censor the messaging app Telegram. The IP addresses in question were allegedly being used by Telegram, who had refused to obey a Russian court order demanding that they hand over encryption keys to the Russian government. The ban on the IP addresses, which are said to total a “significant number”, may mean that other Google and Amazon services are affected within Russia. The CEO of Telegram, Pavel Durov, thanked Google and Amazon “for not taking part in political censorship”, implying that the tech giants themselves had been asked by Russia to block Telegram's services but that they had refused. Mr. Durov is a vocal critic of Russia's stance on internet freedom, which is classed as “not free” by the non-profit organisation Freedom House.