The hacktivist group temporarily brought down as many as 40,000 websites, with the majority of them now back online.
Earlier the hacktivist group released a video with a message for Turkey:
"Dear government of Turkey, if you don't stop supporting ISIS, we will continue attacking your internet, your ROOT DNS, your banks and take your government sites down," Anonymous said. "After the ROOT DNS we will start to hit your airports, military assets and private state connections. We will destroy your critical banking infrastructure."
Russia has also accused Erdogan and his family of direct involvement in the terrorist group's oil business.
The West has also repeatedly urged Ankara to seal the porous border with Syria to prevent terrorists from entering or leaving the country.