add combined_disguised_trackers.json

Following up on https://github.com/AdguardTeam/cname-trackers/issues/4#issuecomment-793148173

Could you also provide (and maintain) a JSON that maps between first party domains and CNAME domains?

Something like:

{
  "abc.some-first-party.com": "xyz.potential-tracker.com",
   ...
}

In cases of multiple CNAME records, could you provide just the one entry for the domain at the end of the chain (https://github.com/AdguardTeam/cname-trackers/issues/4#issuecomment-796918623)?

The basic idea here is to enable canonical name lookups for a set of domains. The answers provided by the JSON should match answers provided by the dns.resolve() API.

For example:

browser.dns.resolve("alsgaj.chosun.com", ['canonical_name']).then(r=>{console.log(r.canonicalName)})
// prints gum.va1.vip.prod.criteo.com (not a.dnsdelegation.io)

[ameshkov]

@ghostwords yeah, after all, that’s okay that you’re getting a different entry. We’re seeing many of them, they may change randomly, so we just pick a random one.

[ameshkov]

Are these all expected as DNS records change while your data is a snapshot from a particular point in time?

Most likely it is, but we’d better double-check this. Let me reopen it just in case.