Re: ad.doubleclick.net missing from DNS?

[Sean Donelan]

http://www.washingtonpost.com/wp-dyn/articles/A18735-2004Jul27.html
  DoubleClick spokeswoman Jennifer Blum said the attack targeted the
  company's domain name servers (DNS) -- machines that help direct
  Internet traffic -- causing "severe service disruptions" for all 900 of
  its customers. Blum said the outage was caused by a distributed
  denial-of-service attack, in which hackers use the firepower of
  thousands of hijacked computers to flood a Web site with so many bogus
  Web page requests that it renders the site unavailable to legitimate
  users.
[...]
  The FBI is not investigating the incident because DoubleClick has not
  filed a report, said bureau spokeswoman Megan Baroska.