Four children from New South Wales (NSW) are among 29 victims of child abuse rescued from different parts of the world after a crackdown on the website. An 11-year-old Brisbane boy, eight children in Russia, five in Mexico and others in Britain were also rescued, the Age reported.

Queensland police tracked the website for more than a year, covertly gathering the internet addresses of 21,000 site users - 1,000 of them in Australia - and arrested its alleged mastermind on the Gold Coast, the report said.

Twenty-one people have been charged with 86 offences in Queensland, mostly possession of child pornography and using a carriage service to view illegal material.

Among those charged is a 23-year-old man who police say had "full control" of the site, which was hosted on a server in the Netherlands and contained 44,000 child pornography images. He is due to appear in a Brisbane court June 3.