https://zlib.org has just been 'seized'. This is the rather dramatic page one sees when clicking the link:

https://wired.com/2012/03/feds-seize-foreign-sites
Uncle Sam: If It Ends in .Com, It's .Seizable

The U.S. #government says it has the #right to #seize any .com, .net and .org domain name because the companies that have the contracts to administer them are based on United States soil, according to Nicole Navas, an Immigration and Customs Enforcement spokeswoman.