DNS/free-and-publicについて、ここに記述してください。

https://www.lifewire.com/free-and-public-dns-servers-2626062

Free & Public DNS Servers (Valid April 2017)
{{{
Provider	Primary DNS Server	Secondary DNS Server
Level3	        209.244.0.3	209.244.0.4
Verisign	64.6.64.6	64.6.65.6
Google	        8.8.8.8	        8.8.4.4
DNS.WATCH	84.200.69.80	84.200.70.40
Comodo Secure DNS　8.26.56.26	8.20.247.20
OpenDNS Home	208.67.222.222	208.67.220.220
Norton ConnectSafe　199.85.126.10	199.85.127.10
GreenTeamDNS	81.218.119.11	209.88.198.133
SafeDNS　	195.46.39.39	195.46.39.40
OpenNIC　	96.90.175.167	193.183.98.154
SmartViper	208.76.50.50	208.76.51.51
Dyn　　　　	216.146.35.35	216.146.36.36
FreeDNS　	37.235.1.174	37.235.1.177
Alternate DNS	198.101.242.72	23.253.163.53
Yandex.DNS	77.88.8.8	77.88.8.1
UncensoredDNS	91.239.100.100	89.233.43.71
Hurricane Electric	74.82.42.42	 
puntCAT　	109.69.8.51	 
}}}

== Public DNS Server List ==
http://public-dns.info/

http://public-dns.info/nameserver/jp.html