There's a lot of 2-letter domains: https://en.wikipedia.org/wiki/Single-letter_second-level_domain#Two-letter_domain_names https://en.wikipedia.org/wiki/Single-

There's a lot of 2-letter domains: https://en.wikipedia.org/wiki/Single-letter_second-level_domain#Two-letter_domain_names https://en.wikipedia.org/wiki/Single-letter_second-level_dom... Single-letter domains for .org, .net, and .com are/were reserved, although there are exceptions such as http://www.x.org http://www.x.org. Other TLDs may vary.