MSK-IX (Moscow Internet eXchange) is an Internet eXchange Point (IXP) with headquarters in Moscow, Russia. With over 549 connected networks and 7,7 Tbps of peak traffic (February 2025), MSK-IX is one of the world's largest IXPs. According to the Internet Exchange Report by Hurricane Electric Internet Services, MSK-IX is the largest IXP in Russia and 17th largest in the world by the numbers of members.
MSK-IX operates Internet eXchanges (IXes) in 9 cities: Moscow, St. Petersburg, Rostov-on-Don, Stavropol, Samara, Kazan, Ekaterinburg, Novosibirsk, Vladivostok and maintains an access PoP in Riga (Latvia). MSK-IX operates a distributed DNS platform, which provides authoritative name servers for the country-code top-level domains (ccTLDs) .RU and .РФ for Russia. Also it operates alternative DNS root servers of Russian National Domain Name System for Roskomnadzor due to (Sovereign Internet Law).