They do. And they have their own search engine, too - Yep.com They have some info on their Data[0] page. I always saw them as - if Google Search had a public

They do. And they have their own search engine, too - Yep.com They have some info on their Data[0] page. I always saw them as - if Google Search had a public back-end UI, then Ahrefs would be it. [0]: https://ahrefs.com/big-data https://ahrefs.com/big-data