NATting a whole country?

According to http://www.nytimes.com/aponline/technology/AP-TechBit-Wikipedia-Block.html all of Qatar appears on the net as a single IP address. I don't know if it's NAT or a proxy that you need to use to get out to the world, but whatever the exact cause, it had a predictable consequence -- the entire country was barred from editing Wikipedia, due to abuse by (presumably) a few people. --Steve Bellovin, http://www.cs.columbia.edu/~smb