"Ko Ko Bop" ranked first in the Melon Realtime Chart, making EXO the first K-pop group to be number one on the list after the changes to the list were implemented on February 27, 2017. The other songs of the album entered in the top 9. It was reported that several servers crashing, due to the large number of fans entering the web pages. "Ko Ko Bop" also surpassed the 155 lists of iTunes around the world, including K-pop and pop lists, as well as lists of all genres. "Ko Ko Bop" topped Gaon's digital chart for four consecutive weeks, making EXO the first artist to achieve it in 2017. EXO also became the third group of idols to position themselves in Gaon's first place for four weeks, as well as the only group of male idols. The song also ranked first in Gaon Monthly Chart in August, making EXO the first group in 2017 and the fifth group of boys since 2012 to position itself in first place.