www.2-Letter.com

Let's see how many 2-letter domain names can I think of and how many of these you are already aware of:

www.ft.com

www.ey.com

www.aa.com

www.ba.com

www.ti.com

www.ta.com

If you got less than 3 correct answers....you need to do something else in life..... besides what you have been doing day in and day out.

Here are the answers:

Financial Times

Ernst & Young

Well it's not Arthur Anderson.  It is American Airlines

British Airways

Tough one.. right? It is Texas Instruments.

Another toughie: TA Associates, the private equity firm

The last two 2 letters domain name to be auctioned were www.xu.com and www.zr.com

There are a few 1 letter domain name as well.  The ICANN has stopped auctioning these domains now.  The few lucky ones to be registered before the ban are 

i.net

q.net

q.com

z.com

x.net

x.com

Out of the above only 3 are operational.  Just browse and find out.