The websites will be blocked as part of a government-sponsored trial of its filter technology that will start before Christmas and last six weeks.
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"While the ACMA blacklist is currently around 1300 URLs, the pilot will test against this list - as well as filtering for a range of URLs to around 10,000 - so that the impacts on network performance of a larger blacklist can be examined," se said.
The government is calling for ISP providers to express interest in taking part in the trial. Just one ISP has volunteered so far.
A spokesman for Mr Conroy said: ''The pilot will provide an invaluable opportunity for ISPs to inform the Government’s approach. ''The live pilot will provide valuable real-world evidence of the potential impact on internet speeds and costs to industry and will help ensure we implement a filtering solution that is efficient, effective and easy for Australian families to use.''
A trial of web-filtering technology earler this year found it could slow internet access by as much as 87 per cent and by at least 2 per cent. Australia's internet service is already notoriously sluggish.