Question: what are best dns servers?
Answer: OpenDNS. 208.67.222.222. Owned by Cisco, OpenDNS has two free options: Family Shield and Home. ... 
Cloudflare. 1.1.1.1. ... 
1.1. 1.1 with Warp. ... 
Google Public DNS. 8.8.8.8. ... 
Comodo Secure DNS. 8.26.56.26. ... 
Quad9. 9.9.9.9. ... 
Verisign Public DNS. 64.6.65.6. ... 
OpenNIC. 13.239.157.177.