This is at the same time the best protection of your privacy available, because no single entity will ever receive all of your lookup information. If you run your own it simply works like this. Or you can use 8.8.8.8 - then Google does that on your behalf all the while learning about what domains you lookup. Then your ISP's nameserver does precisely that. If you don't run your own nameserver, your simple router can tell your client systems the address of the nameserver(s) provided by your ISP. This is what recursive nameservers do every single time. Lastly it will ask this server for " and get 81.171.2.181. Now a lot of additional queries take place starting at the top again, because it needs to learn about either "nl", or "be", or "eu" - all not in the cache, either. It picks one of them at random and asks it for the nameservers for the "org" zone.
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