Not the highest. This is old news.
Moniker.com announced that it had brokered the sale of Porn.com to MXN Limited for more than $9.5 million. The exact price and terms of the transaction were not disclosed but Moniker said this is the largest all-cash domain transaction in history. In total value, they said it would be the second largest domain sale overall after Sex.com (which reportedly sold for approximately $12 million in cash and stock in January 2005).
T.R.A.F.F.I.C West Live Auction , Porn.com attracted a bid close to $7 million but did not meet the owner's reserve. Moniker continued working with interested parties and finally completed a sale. Knowledgeable sources say the price paid for the domain would be approximately 5-6 times its annual earnings.
The exact price was not released (MXN had put out their own press release and said the price was over $9 million, then Moniker followed with a release pegging the minimum figure at $9.5 million).