The largest online quiz involved 1,023 participants and was achieved by Vodafone Turkey Sales Channel, in Istanbul, Turkey, on 30 December 2011.

1023 sales representatives from 42 cities in Turkey took part in the quiz which consisted of 45 questions.
All of them started at the same time at 08:30 am and the quiz lasted for more than one hour. The winner of the quiz was a sales representative from Antalya.