Final answer:
Link Local and Site Local IPv6 address prefixes are not routable; Link Local is for single network segments and Site Local is deprecated in favor of Unique Local Addresses.
Step-by-step explanation:
The IPv6 address prefixes that are not routable are Link Local and Site Local addresses. Link Local addresses are used for communication within a single link or network segment that is not forwarded to other links or network segments. Site Local addresses were originally designed for use within a single site or organization, much like private IPv4 addresses, but they have been deprecated by RFC 3879 in favor of Unique Local Addresses (ULAs). Global addresses are globally unique and routable on the IPv6 internet. Organization Local, also known as Unique Local addresses, are not globally routable but are intended to be used within an organization or site for internal traffic and can be routed between a limited set of sites.