Government IP Addresses
No, this isn't some secret list I have hacked out of the NSA, a black market purchase, or this is not intel that the terrorist could use. This is the list of IP addresses that the government uses. So as a responsible technologist (sounds more like a doctor doesn't it?), you should not scan this.
The government already wastes enough tax money, why make them waste more performing a background check on you because they traced the packets to some experimental network discovery windows service you are writing for your Network Admin...just because you can? More importantly they might discover something about your past, that you would rather the government not find out about.
Thanks to Eric for posting this list.