Key rules
Russia
Required by Federal Law No. 115-FZ for all foreigners, including EAEU citizens and students. It can be filed with the Ministry of Internal Affairs (МВД, MVD), by post or through Gosuslugi (Госуслуги). The fine for an organisation is 400,000–800,000 ₽, and up to 1,000,000 ₽ in Moscow, St Petersburg and their regions (Art. 18.15 of the Code of Administrative Offences, КоАП). The rules change, so check the MVD website and Gosuslugi.
Sources: Ministry of Internal Affairs of Russia («МВД России», мвд.рф): migration services, Federal Law No. 115-FZ «О правовом положении иностранных граждан» (On the Legal Status of Foreign Citizens), ConsultantPlus, Gosuslugi («Госуслуги»)