==== Google ====

  8.8.8.8
  8.8.4.4
  2001:4860:4860::8888
  2001:4860:4860::8844
  
Contra: Google is logging your location and your IP for up to 48 hours.
So go better with a DNS Server from OpenNIC.

==== Cloudflare ====

  1.1.1.1
  1.0.0.1
  2606:4700:4700::1111
  2606:4700:4700::1001
  
==== ChaosComputerClub ====

  85.214.20.141 (FoeBud)
  204.152.184.76 (f.6to4-servers.net, ISC, USA)
  2001:4f8:0:2::14 (f.6to4-servers.net, IPv6, ISC)
  194.150.168.168 (dns.as250.net; Berlin/Frankfurt)
  213.73.91.35 (dnscache.berlin.ccc.de)
  
More DNS Servers:

  * https://www.opennicproject.org
  * http://dnsrec.meo.ws (OpenNIC)



Sources: http://www.pcworld.com/article/183671/Google_Public_DNS_and_Your_Privacy.html