Datagrams with multicast address are simultaneously transmitted to one or more multicast host groups or networked computers.
Multicast addresses range from 188.8.131.52 to 184.108.40.206. Examples for IPV4-reserved addresses for multicasting are as follows:
Multicast addresses in IPV4 are defined using leading address bits of 1110, which originate from the classful network design of the early Internet when this group of addresses was designated as Class D. Multicast addresses in IPV6 have the prefix ff00::/8. IPv6 multicast addresses are generally formed from four-bit groups.