The DNS service enables computers to convert domain names into IP addresses.

DNS servers are typically offered by the ADSL provider, but using alternative servers is often recommended due to potential issues like service interruptions, content filtering, and slowness.

Here are some of the most important free alternative DNS servers.

  • OpenDNS: It is the most popular service, having reached 1% of Internet users and is the first mandatory reference in this field.
    • Servers: 208.67.222.222 and 208.67.220.220.

 

  • Google Public DNS: It is Google’s entry into the DNS field made at the end of 2009, with a focus on response speed.
    • Servers: 8.8.8.8 y 8.8.4.4.

 

  • ScrubIT: The service is designed to filter websites containing pornographic material, phishing schemes, or other malicious content. It is highly recommended for corporate environments or families seeking to restrict such content.
    • Servers: 67.138.54.100 y 207.225.209.66.

 

  • Comodo Secure DNS: The service from the security company Comodo was launched recently..
    • Servers: 8.26.56.26 y 8.20.247.20.