What Does OpenDNS Mean?
OpenDNS is the name of a Domain Name System (DNS) service as well as of the company that provides that service. The OpenDNS service extends the DNS by incorporating features such as content filtering and phishing protection. It is also touted as faster, more reliable and having zero downtime because of its global network of DNS servers that ensures that, if one or two servers are down, the others can still carry the slack.
Techopedia Explains OpenDNS
OpenDNS, the company, provides a DNS service a step above those being provided by Internet service providers (ISPs) around the globe. DNS is an integral part of the World Wide Web that allows both humans and computers to understand each other when it comes to Web addresses; humans can identify words easily (domain names), whereas computers rely on numerical values (the IP address of a website). DNS is a directory service, and DNS servers are essentially lookup tables containing the associations between domain names and their respective IP addresses. The DNS server essentially points the user’s request toward the correct address of the computer/server that hosts the website being requested.