MySpace provided two state attorneys general the names of 90,000 registered sex offenders it had banned from its site in response to a subpoena.

The figure is 40,000 more than the amount previously acknowledged by MySpace, according to Attorney General Richard Blumenthal of Connecticut, who along with Attorney General Roy Cooper of North Carolina are among officials pressing social networking sites to adopt more stringent safety measures.

“Almost 100,000 convicted sex offenders mixing with children on MySpace  shown by our subpoena  is absolutely appalling and totally unacceptable,” Mr. Blumenthal said in a statement. “For every one of them, there may be hundreds of others using false names and ages.”

Last year, MySpace, owned by News Corporation, and Facebook.com agreed to set security standards after the Web sites were criticized for not doing enough to protect minors from sexual predators lurking on social networking sites.