Need help with figuring out what ad network a site is using

I have seen a couple of sites that have ads and when you hover over them the link is: https://adclick.g.doubleclick.net/.......
I searched around google for it and it says its part of a google platform or part of adsense or something like that but cant figure out what it is exactly.

If it is part of adsense, I'm just curious how did this site get into adsense since the site language isn't supported by adsense. I'm trying to find ways to monetize my own site which is the same language, and was interested in using the same ads. Would appreciate your help.