Exhibit 4.266  FEDERAL SERVICE FOR SUPERVISION IN THE SPHERE OF COMMUNICATIONS,  INFORMATION TECHNOLOGY AND MASS MEDIA  LICENSE  No. 146073 dated October 24, 2016  For Rendering  Local Telecommunications Services, Except for  Local Telecommunications Services via Coin-Box Telephones  and Multiple-Access Facilities  This license is granted to  Public Joint Stock Company  Mobile TeleSystems  Primary State Registration Number  of a Legal Entity (Individual Entrepreneur)  (OGRN, OGRNIP)  1027700149124  Taxpayer Identification  Number (INN)  7740000076


Location address (place of residence):  4 Marksistskaya Str., Moscow, 109147  The territory covered by telecommunications services is specified in the Appendix.  This license is granted for a term:  until October 24, 2021  This license is granted by decision of  the licensing body  Order dated July 25, 2016 No. 369-рчс  Appendix being an integral part of this license is executed on  2 sheets   Deputy   Head
SignatureO.A. IvanovStampL.S.


Appendix to the license No. 146073**  License Requirements  1.            Public Joint Stock Company Mobile TeleSystems (licensee) shall observe the term of this license.  Abbreviated name:  MTS PJSC  OGRN [Primary State Registration Number] 1027700149124                           INN (TIN) 7740000076  Location address:  4 Marksistskaya Str., Moscow, 109147  2.            The licensee shall commence provision of telecommunications services under this license on or before October 24, 2016.  3.            The licensee shall provide telecommunications services under this license only within the territory of the Altai Territory.  4.            Under this license the licensee shall provide a subscriber* with:  a) access to the licensees telecommunications network;  b) the subscriber line for permanent use;  c) local telephone connections for:  transmission of voice information;  transmission of facsimile messages;  transmission of data;  d) access to telematic communications services and intra-area, intercity and international telephone communications services, as well as to data communication services, except for data communication services for voice transmission;  e) access to the information inquiry support system;  f) the possibility of free calls around the clock to emergency response services by dialing a single number for calling emergency response services, as well as numbers for calling the appropriate emergency response services established in accordance with the Russian system and numbering plan;  g) transmission of warning signals and emergency information on hazards arising in case of a threat of occurrence or occurrence of emergencies of natural and anthropogenic nature, as well as during military actions or as a result of these actions, on the rules of public conduct and the need for protection measures.  5.            The licensee shall provide telecommunications services in accordance with the rules of telecommunications services, as approved by the Government of the Russian Federation.  1


6.            When providing telecommunications services, the licensee shall observe the telecommunications network connection and interoperability rules, as approved by the Government of the Russian Federation, in case of connection of the licensees local telephone network(s) to the public telecommunications network, connection to the licensees local telephone network(s) of other telecommunications networks, recording and transmission of traffic in the licensees local telephone network(s), recording and transmission of traffic from (to) telecommunications networks of other operators.  7.            This license has been granted based on the results of consideration of the application for extension of the license No. 90191 dated October 24, 2011, other than by a bidding process (auction, competitive tender). No license requirements are established with respect to fulfillment by the licensee of its obligations assumed as a result of participation in a bidding process (auction, competitive tender) for the relevant license.  8.            When providing telecommunications services under this license, the radio-frequency spectrum is not used.  9.            The licensee shall have an appropriate telecommunications network management system meeting the regulatory requirements to telecommunications network management systems established by the federal executive authority responsible for telecommunications.  10.          The licensee shall fulfill the requirements to telecommunications networks and facilities for performance of investigative activities, as established by the federal executive authority upon agreement with the authorized state bodies engaged in investigative activities, and take measures to prevent disclosure of organizational and tactical methods of performance of these activities.  11.          The licensee shall provide information on the basis for accrual of the mandatory deductions (non-tax payments) to the universal service fund in the manner and in the form established by the federal executive authority responsible for telecommunications.  
 * In addition to the services provided for by this license, other services technologically closely related to local telecommunications services and intended for increase in their customer value may be provided, except for local telecommunications services via coin-box telephones and multiple-access facilities, unless a separate license is required for this purpose. ** This license has been granted within extension of the license No. 90191 dated October 24, 2011.  2


Total numbered, bound and sealed  3 (Three) sheet(s). Head of the Department for radio frequency assignment registers  and licenses in the field of telecommunications (Signature) I. Yu. Zavidnaya Stamp August 08, 2016