Most of us know about the common internal IP address reservations, and typically think of the rest of the IP addresses as public, internet accessible/routable IP address. However there is a set of several IP address in the class “D” and “E” which are not commonly used. Recently someone asked a question about a particular IP address. I recognized it as a multicast IP address. Here’s a table of well-known multicast IP’s: (there are others)
