[jdp23]

From the New York Times article on this http://www.nytimes.com/2010/12/07/world/07sites.html

But the list of “critical foreign dependencies,” compiled in 2008 from diplomatic missions at the request of the Department of Homeland Security, appears largely limited to sites that any would-be terrorist with Internet access and a bit of ingenuity might quickly have identified.

The list, drawn up in 2008 and subject to annual updating, mentions only the cities in which the various sites are located, not their specific addresses (though that information, too, would generally be available online).