is assigned for private use within an organization. Packets destined to administratively scoped IPv4 multicast addresses do not cross administratively defined organizational boundaries, and administratively scoped IPv4 multicast addresses are locally assigned and do not have to be globally unique. The range may be structured to be loosely similar to the scoped IPv6 multicast address.

;Ethernet-specific
:In support of link-local multicasts which do not use IGMP, any IPv4 multicast address that falls within the and ranges will