Matthew Bennett has admitted inciting young girls, who were actually undercover police officers, to engage in sexual activity.
Bennett faced 11 charges in court, including sending lewd pictures of himself to girls under 16, persuading a girl of 12 to send an indecent picture of herself to him and inciting the mother of a seven-year-old to perform a sex act on him and allowing her to be sexually assaulted by him.
But the woman and girls with whom Bennett was communicating were in fact undercover police officers.
The 26-year-old, of Park Road in Wigan, was further charged with distributing indecent images of children
The offences took place online between January and July this year.
On his first appearance before a Bolton Crown Court judge Bennett pleaded guilty to all the charges.