8.8.8.8 is a public recursive DNS resolver run by Google. It’s widely used for testing network reachability and diagnosing DNS issues, typically alongside 8.8.4.4. Availability can vary by network or region.

You may encounter this IP when testing your internet connection or DNS configuration, when using Google’s Public DNS service to resolve domain names faster and more securely, when running network diagnostic tools such as ping or traceroute, or when checking logs and analytics that record automated DNS queries from user devices or servers.