So I was asked to join a clan, and on my ps4, if I check my infos, I see we are ranked number 1. Is this a mistake? And on how many? Is there a way I can find these infos on their website, or do I need to have the ipad app?

They were probally level 1.

Nope, we are level 23
A lot of people with kd > 3

Ranked 1 in your division ?

Is there a way to see those divisions? It's more the question. I want to know how it is possible for me to see the rankings.

What I see on the "info" of the clans, is Position clan wars : 1 . We are level 23, adReNaLiZeD-

That just means you won your clan war.

Thanks, I checked this yesterday, asking the clan members where we were, and to what I heard, we were first again. But I don't think there is a lot of teams, and it's just basically a rush to win a certain amount of games, so no big deal.

Had to have been ranked 1st in a clan war. Currently clan wars doesn't track overall rank for clans. But with the addition of Diamond League in February there will at least be a running leaderboard for those in Diamond.