Regular Best Free Public DNS Servers
| Providers | Primary DNS Server | Secondary DNS Server | Server Location |
| 8.8.8.8 | 8.8.4.4 | Mountain View, California, USA | |
| OpenDNS | 208.67.222.222 | 208.67.220.220 | San Antonio, Texas, USA |
| Level3 | 209.244.0.3 | 209.244.0.4 | Diamond Bar, California, USA |
| DNS Advantage | 156.154.70.1 | 156.154.71.1 | Sterling, Virginia, USA |
| Verizon | 4.2.2.1 | 4.2.2.2 | Routing to nearest Level3 nodes |
| SmartViper | 208.76.50.50 | 208.76.51.51 | Birminghan, Alabama & Tampa, Florida USA |
Free Public DNS Servers with Safe-Browsing Shield
| Providers | Primary DNS Server | Secondary DNS Server | Server Location |
| Norton ConnectSafe 1 | 198.153.192.40 | 198.153.194.40 | Auto blocking malware, phishing & scams web sites |
| Norton ConnectSafe 2 | 198.153.192.50 | 198.153.194.50 | Same to 1 plus blocking pornographic web sites |
| Norton ConnectSafe 3 | 198.153.192.60 | 198.153.194.60 | Same to 2 plus blocking non-family friendly web sites |
| Comodo Secure DNS | 8.26.56.26 | 8.20.247.20 | Auto blocking phishing, malware and spyware web sites |
| Securly | 184.169.143.224 | 184.169.161.155 | Auto blocking adult oriented pages and web sites |
| ScrubIT | 67.138.54.100 | 207.225.209.66 | Auto blocking pornographic and malicious web sites |
