Rostelecom is Russia's largest provider of digital services for a wide variety of consumers, households, private businesses, government and municipal authorities, and other telecom providers. Rostelecom interconnects all local public operators' networks into a single national network for long-distance service. In other words, if one makes a long-distance call or originates Internet contact to or from Russia, Rostelecom is likely providing part of the service. The company's stock trades primarily on the Moscow Exchange. Wikipedia