IPv6 Address Prefixes

Type	Prefix	Leading Hex Characters
Global Unicast	`2000::/3`	`2` or `3`
Linklocal Unicast	`fe80::/10`	`fe80`
Multicast	`ff00::/8`	`ff`
Multicast (Linklocal)	`ff02::/16`	`ff02::1` (all nodes) `ff02::2` (all routers) `ff02::1:2` (Dynamic-Host-Configuration-Protocol)
Solicited Node	`ff02::1:ff00:0/104`	`ff02::1:ff`
Unspecified (host that hasn't gotten a valid v6 address)	`::/128`	`0::0`
Loopback	`::1/128`	`::1`
Documentation & Examples	`2001:db8::/32`	`2001:db8`