#TIAL 1e100.net is a Google-owned domain name used to identify the servers in [Google's] network.
Following standard industry practice, [Google] make[s] sure each IP address has a corresponding hostname. In October 2009, [Google] started using a single domain name to identify [Google] servers across all Google products, rather than use different product domains such as youtube.com, blogger.com, and google.com. [Google] did this for two reasons: first, to keep things simpler, and second, to proactively improve security by protecting against potential threats such as cross-site scripting att…