The paper is devoted to the conditions of realization of sovereignty and jurisdiction of the state in respect of extraterritorial information and communication space on the platform of cyberspace. The author attempts to consider the constructability of the concept of «territory of the state», the legal meaning of which is to determine the spatial limits of the territorial sovereignty and full jurisdiction of the state in relation to cyberspace. The paper examines the extent to which Russian law reflects the principles of establishing jurisdiction based on the principle of server location and domain name registration proposed in the foreign and Russian doctrine. The author also raises a question whether the solution of the jurisdictional issue in relation to the national segment of the Internet is covered by the attempt of the centralized management of the Internet, i.e. the creation of a national system of routing Internet traffic in order to establish protective measures to ensure long-term and sustainable operation of the Internet network in Russia, regardless of external or internal conditions, in the bill «On amendments to the Federal law «On communications» and the Federal law «On information, information technology and information protection» adopted in the third reading by the State Duma on April 16, 2019.