Recognised as IPv6 prefix
ff00::/8
- IPv6
- Multicast
- /8
ff00::/8 is an IPv6 prefix in the multicast range: one-to-many delivery; IPv6 has no broadcast. It covers 2^120 addresses, from ff00:: to ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff.
Representations
Compressed (RFC 5952)ff00::
Fully expandedff00:0000:0000:0000:0000:0000:0000:0000
In a URL[ff00::]brackets separate the address from the port
Integer338953138925153547590470800371487866880
Hexadecimal0xff000000000000000000000000000000
Reverse DNS0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.f.f.ip6.arpaeach nibble becomes a label, least significant first
What kind of address
RangeMulticastone-to-many delivery; IPv6 has no broadcast
Routable on the internetNo
Address familyIPv6128 bits, against 32 for IPv4
Groupsff00, 0, 0, 0, 0, 0, 0, 0
Zero groups7runs of two or more are what "::" replaces
Prefix arithmetic
Prefix length/8
Network addressff00::
Last addressffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
Addresses in the block2^120more than the whole IPv4 internet, many times over
/64 subnets available2^56a /64 is the standard size for a single LAN
Host bits120
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