According to this page[0], this is a project by Pieter Levels, which I immediately assumed because of the design.<p>That said, I don't think this project is updated very much, or has _any_ value because it doesn't disclose how the data is acquired, and how the rankings are distributed.<p>Additionally, there is no separate page for the airlines themselves, and instead they are direct links to the airline website.<p>In this context, the page might be useful for novelty purposes to learn about different airline names, but nothing more.<p>[0]: <a href="https://levels.io/projects/" rel="nofollow">https://levels.io/projects/</a>