That’s the fun part. There aren’t a lot. Since you can’t register them since 1993 for .com. There are only a couple domains available which escaped the ICANN claim. X.com being one of them. X.org is the other “most popular” within particular crowds. T.co, g.co and w.org are others.
He wasn’t wrong without this change. Single letter domains are rare and worth quite some money.
Name some popular single-letter domain sites.
That’s the fun part. There aren’t a lot. Since you can’t register them since 1993 for .com. There are only a couple domains available which escaped the ICANN claim. X.com being one of them. X.org is the other “most popular” within particular crowds. T.co, g.co and w.org are others.