Private equity firms KKR and Silver Lake are in talks to buy Internet domain site and a deal could be more than $2 billion, two sources familiar with the matter said on Friday. registers Internet domain names for commercial and private users. The New York Post earlier reported news of the takeover talks. put itself up for sale in September 2010 according to a Wall Street Journal article at the time, and hired Qatalyst Partners to advise it.

Private equity deal flow so far in 2011 has risen about 42 percent from a year ago, according to Thomson Reuters data. [nN1E75L0JS]

KKR and Silver Lake declined comment. GoDaddy was not immediately available for comment.

(Reporting by Megan Davies, editing by Gerald E. McCormick)