Top Countries with the Longest Total Duration for Phineas and Ferb: Quest for Cool Stuff from Review Channels

This list represents countries of YouTube review channels based on the longest total video duration across all videos for Phineas and Ferb: Quest for Cool Stuff. This only includes channels that have created review videos. A channel associated with a country will have its numbers added to their country's total. Numbers are retrieved via the YouTube API and updated daily.