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Free & Public DNS Servers

 

Note: Primary DNS servers are sometimes called preferred DNS servers and secondary DNS servers are sometimes called alternate DNS servers. Primary and secondary DNS servers can be "mixed and matched" to provide another layer of redundancy.

Provider

Primary DNS Server

Secondary DNS Server

Level31

209.244.0.3

209.244.0.4

Google2

8.8.8.8

8.8.4.4

Securly3

184.169.143.224

184.169.161.155

Comodo Secure DNS

8.26.56.26

8.20.247.20

OpenDNS Home4

208.67.222.222

208.67.220.220

DNS Advantage

156.154.70.1

156.154.71.1

Norton ConnectSafe5

198.153.192.40

198.153.194.40

GreenTeamDNS6

81.218.119.11

209.88.198.133

SafeDNS7

195.46.39.39

195.46.39.40

OpenNIC8

216.87.84.211

23.90.4.6

Public-Root9

199.5.157.131

208.71.35.137

SmartViper

208.76.50.50

208.76.51.51

Dyn

216.146.35.35

216.146.36.36

censurfridns.dk10

89.233.43.71

89.104.194.142

Hurricane Electric11

74.82.42.42

 

puntCAT12

109.69.8.51

 

[1] The DNS servers listed above as Level3 will automatically route to the nearest DNS server operated by Level3 Communications, the company that provides most of the ISPs in the US their access to the Internet backbone.

[2] Google also offers IPv6 public DNS servers: 2001:4860:4860::8888 and 2001:4860:4860::8844.

[3] Securly's DNS servers block adult content by default, including of course X-rated content but also adult oriented pages on websites like Wikipedia, adult themed searches on Google, and more. The grown-ups in the house can sign up here to bypass all restrictions.

[4] OpenDNS also offers DNS servers that block adult content, called OpenDNS FamilyShield. It's also free but you do have to sign up here. A premium DNS offering is also available, called OpenDNS Home VIP.

[5] The Norton ConnectSafe DNS servers listed above block sites hosting malware, phishing schemes, and scams. Use 198.153.192.50 and 198.153.194.50 to block those sites plus those with pornographic content. Use 198.153.192.60 and 198.153.194.60 to block all previously mentioned site categories plus those Norton deems "non-family friendly."

[6] GreenTeamDNS "blocks 18 categories which include malware, botnets, dangerous websites, adult related content, aggressive/violent sites as well as advertisements and drug-related websites" according to their FAQ page. Premium accounts have more control.

[7] Register here with SafeDNS for content filtering options in several areas.

[8] The DNS servers listed here for OpenNIC are just two of many in the US and across the globe. Instead of using the OpenNIC DNS servers listed above, see their complete list of public DNS servers here and use two that are close to you or, better yet, let them tell you that automatically here. OpenNIC also offers some IPv6 public DNS servers.

[9] These Public-Root DNS servers are the only two currently operating in the United States but if you're located ouside the US, see their complete list here and choose the best servers based on your location.

[10] The censurfridns.dk DNS servers are uncensored, operated by a privately funded individual, and are physically located in Denmark. You can read more about them here. IPv6 DNS servers are also available at 2002:d596:2a92:1:71:53:: and 2002:5968:c28e::53

[11] Hurricane Electric also has an IPv6 public DNS server available: 2001:470:20::2.

[12] puntCAT is physically located near Barcelona, Spain. The IPv6 version of their DNS server is 2a00:1508:0:4::9.