I was using AMD's magic packet utility to build a list of computers to do wake-on-lan and it found these entries:
220.127.116.11 igmp.mcast.net 01-00-5e-00-00-16 18.104.22.168 *NameNotFound* 01-00-5e-00-00-fc 22.214.171.124 *NameNotFound* 01-00-5e-7f-ff-fa
First of all, I'm not sure why it would find these. They're not in the subnet I provided. I've never heard of them before; if they're reserved or not.
Feel free to offer a more descriptive title to this question and delete this comment. I'm not sure how to describe what I'm seeing, google only makes fun of me when I ask it this.