Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
I'm trying to find an official list of tier 1 ISPs. I found a list on Wikipedia but can't quite understand how it was compiled, it just lists AS rank as a source.
I also found some other websites that provide a list but don't cite a source.
There is no standard defining 'tier 1'. So no, there's no formal list. There are many slightly different interpretations on what a tier 1 is.
Required, but never shown