Snapnames/Moniker will be auctioning off the single letter domain name, i.CO at the beginning of February. In order to bid, entities must be pre-approved by January 21, 2011 – less than 10 days away. If you want to bid but aren’t approved, it looks like you’ll be SOL.

The private auction  will open online on Thursday, February 3, 2011 and conclude at 3:15 pm (US) Eastern time on Thursday, February 10, 2011. Bidding can be done online at Snapnames.

i.CO, or by contacting Moniker:  sales@moniker.com or (800) 688-6311.

According to the press release,

“I.CO is one of the shortest and most memorable URLs in existence,” said Juan Diego Calle, CEO and founder of .CO Internet S.A.S.   “This is an exceptionally valuable piece of Internet real estate, and the teams at SnapNames and Moniker have set up an outstanding auction process to alert and engage the right buyers.”

The .CO Registry has allocated only a few single-letter domain names to date, several of which have enjoyed high-profile success, including Twitter’s t.CO and GoDaddy’s x.CO, both used as branded URL shorteners, and Overstock’s o.CO, which is replacing Overstock.com as the company’s primary brand for all of its international websites.

e.CO was sold by Sedo last year for $81,000, and the domain name is currently up for sale. Interested buyers can visit e.CO to contact the domain owner. I understand the owner is considering offers of $350,000 or higher at the present time.