Syrian and Russian military officials could not immediately be reached for comment on the latest air strikes.
The Civil Defence, a rescue service operating in rebel-held areas, said on its Twitter feed the air strikes had killed 25 people, 15 of them at a market place in the Fardous district.
Heavy aerial bombardment of eastern Aleppo resumed on October 11 after a pause of several days which the Syrian army said was designed to allow civilians to leave.
President Bashar al-Assad, with military backing from Russia and Iranian-backed militias, aims to take back all of Aleppo, which was Syria's biggest city before the outbreak of war in 2011. The city has been divided between government and rebel control for years.
The Syrian Observatory for Human Rights, a Britain-based organization that reports on the war, also reported heavy air strikes against the rebel-held Eastern Ghouta area near Damascus.