On April 8, 2006, Madonna sold 30,000 tickets in under 40 minutes in Montreal, breaking a record previously held by U2.

On April 8, 2006, Madonna sold 30,000 tickets in under 40 minutes in Montreal, breaking a record previously held by U2. On July 9, 2006, 50,000 tickets went on sale for Madonna's Osaka and Tokyo shows. The tickets were sold out in a record breaking five minutes.

It was Madonna's first time touring Japan in 13 years, and an additional date was added, September 21, 2006, at the Tokyo Dome, to meet high demand. On August 8, 2006, more than 35,000 tickets for the first ever Madonna concert in Moscow went on sale and, as claimed by show organizers, all were sold out in four days, which could be a new record in that country as all other artists had taken more than two weeks to sell out the tickets in the region. However, after many problems with the concert including venue uncertainty, rescheduling, ticket exchange and huge amount of tickets in the hands of speculators, tickets were on sale at their nominal values until the last minute.

Source: https://en.wikipedia.org/wiki/Confessions_Tour