Does anybody know whether there's an open initiative that tries to create a directory of reverse-DNS based IP/subdomain maps to identify adtrackers that are jus

Does anybody know whether there's an open initiative that tries to create a directory of reverse-DNS based IP/subdomain maps to identify adtrackers that are just hidden behind subdomains? The only one I know is crimeflare [1] but it's specific to cloudflare proxied malicious websites. It would be awesome to have a similar directory for second-party domains that point to known ad service IP ranges. [1] http://www.crimeflare.org http://www.crimeflare.org on port 82