A Victorian real estate agent who posed as a young girl online and created "graphic and disturbing" sexual fantasies has been jailed for nine months.

Layne Richard Pearce, 38, was also found with more than 11,000 child porn files on several computers and devices, including "depraved" images, some featuring infant children, County Court of Victoria judge Mark Gamble said on Tuesday.

Layne Richard Pearce has been jailed for nine months in relation to the possession of 11,000 child porn images. Credit:Vince Caligiuri

Pearce earlier pleaded guilty to accessing, possessing and transmitting child pornography.

The court was told he created an online alias called "hurtmeplease" with an associated email address and profile images of a young girl in scant clothing.