Do you want to know if a website is running on EC2? Use this tool to figure it out quickly.
For the domain alluc.org, I found the following IP addresses:
87.106.32.83 - It's not running on EC2 - PTR points to s15363812.onlinehome-server.info
Some EC2 sites: Some surprising sites that aren't running EC2:
- info.rightscale.com - apparently they only eat some of their own dogfood
- www.amazonaws.com