CenterTelecom (Open Joint-Stock Company Central Telecommunication Company, Russian: ОАО «Центртелеком») was a fixed-wire telecommunications service provider and Internet service provider in Russia. It was ranked 5th among Russian telecom companies, after Rostelecom, MTS, Vympelcom and MegaFon. 50.69% of Centertelecom's voting stock was held by the Svyazinvest Holding Company. CenterTelecom was listed on the MICEX and RTS stock exchanges under the symbol ESMO.