[BlazingFrog]

If anybody else is curious to learn more about single-letter domain names. They were grandfathered in from another era.

"As of August 2011 only three domains, i.net, x.com and x.org host a web site. q.com is active but redirects to centurylink.com." http://en.wikipedia.org/wiki/Single-letter_second-level_doma...