The action follows weeks of intense government pressure for 22 giants of the internet to remove photographs, videos or texts considered "anti-religious" or "anti-social".
A New Delhi court Monday gave Facebook, Google, YouTube and BlogSpot and other sites in two weeks to submit additional plans for the control of their networks, according to Press Trust of India.
For India, more than 100 million Internet users, the government says, the U.S. Internet standards are not acceptable.
The case highlights the problems India faces in balancing conservative religious and political sentiments with its hope that the free-wheeling discussion of the Internet and technology will help stimulate the economy and raise living standards for its 1 , 2 billion people.
Google India said Monday no such sites have been removed, but said he would be willing to go after everything that has violated the law or its own local standards.
Indian officials were incensed by offensive material to Prime Minister Manmohan Singh, leader of the ruling Congress Sonia Gandhi and religious groups, including illustrations showing Singh and Gandhi in compromising positions and pigs running through Mecca, the holy city of ' Islam.
"This is not censorship," Communications Minister Sachin Pilot said in Bangalore. "Everybody has to operate within the laws of the country .... There must be a responsible behavior on both sides."
Anyone injured by online content should be able to appeal in court, he said. The government has warned that he has evidence to prosecute the 21 sites for the offenses of "promoting enmity between classes and prejudices doing for national integration."
The government has asked sites to set a voluntary framework to keep offensive material from the Internet.
Facebook India submitted a compliance report for the court Monday, but Yahoo and Microsoft joined in questioning its inclusion in the case, saying no specific complaints were lodged against them, PTI reported. Sites not to comment after the hearing.
Prosecutors, who sued on behalf of a leading Muslim cleric has accused the companies hosting pages that denigrate Islam, said it would provide companies with all relevant documents. The judge gave the companies 15 days to report more.
Facebook India is the third fastest growing market after the United States and Indonesia. The California company, with $ 3.7 billion in revenues last year, has seen its hoped-for launch in China, restrained by rules requiring censorship of the material seen by the Chinese government as objectionable or obscene.
The issue of country-specific censorship has sparked global protests in recent weeks after he said that Twitter tweets would be eliminated in countries where local content is breaking the law.
Twitter has insisted the new policy would help the freedom of expression and transparency, preventing the entire site is blocked. But dissidents and activists who have embraced Twitter in their campaigns accused the site of betraying the freedom of speech.
