I have been struggling to find a published list of prefixes for public internet address spaces, therefore I have compiled my own using the documentation available from IANA (http://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.xhtml). The prefixes below are a simplified version which doesn’t exclude the documentation use ranges as this added many extras that just weren’t needed for my purposes. Public Prefixes These are prefixes to all IP Addresses which are accessible across the public internet.

After moving a few Windows Server Hyper-V hosts recently from one Virtual Machine Manager server to another, a couple of virtual machines started exhibiting some strange behaviour in regards to networking. So I break out trusty “ping” and it doesn’t report any problems. At that point the remote desktop session is working again so I lost interest assuming it to be “one of those things…”. After a couple of days this started happening more and more.