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IP Index (WIP)

This Document Outlines plenty of publicly recognized IPv4 and IPv6 Addresses

IPv4 Space

Address Block Address range Number of Addresses Scope Description
0.0.0.0/8 0.0.0.0-0.255.255.255 16,777,216 Software Current
10.0.0.0/8 10.0.0.0–10.255.255.255 16,777,216 Private network Used for local communications within a private network.
100.64.0.0/10 100.64.0.0–100.127.255.255 4,194,304 Private network Shared address space for communications between a service provider and its subscribers when using a carrier-grade NAT.
127.0.0.0/8 127.0.0.0–127.255.255.255 16,777,216 Host Used for loopback addresses to the local host.
169.254.0.0/16 169.254.0.0–169.254.255.255 65,536 Subnet Used for link-local addresses between two hosts on a single link when no IP address is otherwise specified, such as would have normally been retrieved from a DHCP server.
172.16.0.0/12 172.16.0.0–172.31.255.255 1,048,576 Private network Used for local communications within a private network.
192.0.0.0/24 192.0.0.0–192.0.0.255 256 Private network IETF Protocol Assignments, DS-Lite (/29).
192.0.2.0/24 192.0.2.0–192.0.2.255 256 Documentation Assigned as TEST-NET-1, documentation and examples.
192.88.99.0/24 192.88.99.0–192.88.99.255 256 Internet Reserved. Formerly used for IPv6 to IPv4 relay (included IPv6 address block 2002::/16).
192.168.0.0/16 192.168.0.0–192.168.255.255 65536 Private network Used for local communications within a private network.
198.18.0.0/15 198.18.0.0–198.19.255.255 131,072 Private network Used for benchmark testing of inter-network communications between two separate subnets.
198.51.100.0/24 198.51.100.0–198.51.100.255 256 Documentation Assigned as TEST-NET-2, documentation and examples.
203.0.113.0/24 203.0.113.0–203.0.113.255 256 Documentation Assigned as TEST-NET-3, documentation and examples.
224.0.0.0/4 224.0.0.0–239.255.255.255 268,435,456 Internet In use for IP multicast. (Former Class D network.)
233.252.0.0/24 233.252.0.0-233.252.0.255 256 Documentation Assigned as MCAST-TEST-NET, documentation and examples.
240.0.0.0/4 240.0.0.0–255.255.255.254 268,435,455 Internet Reserved for future use. (Former Class E network.)
255.255.255.255/32 255.255.255.255 1 Subnet Reserved for the "limited broadcast" destination address.

IPv6 Space

Address BlockFirst addressLast AddressNumber of addressesSoftwareDescription
::/128::::1SoftwareUnspecified address
::1/128::1::11hostLoopback address—a virtual interface that loops all traffic back to itself, the local host
::ffff:0:0/96::ffff:0.0.0.0::ffff:255.255.255.255232SoftwareIPv4-mapped addresses
::ffff:0:0:0/96::ffff:0:0.0.0.0::ffff:0:255.255.255.255232
SoftwareIPv4 translated addresses
64:ff9b::/9664:ff9b::0:0:0:064:ff9b::255.255.255.255232Global InternetIPv4/IPv6 translation
64:ff9b:1::/4864:ff9b:1::64:ff9b:1:ffff:ffff:ffff:ffff:ffff2,80 with 248 for each IPv4   Private internetsIPv4/IPv6 translation
100::/64100::100::ffff:ffff:ffff:ffff264RoutingDiscard prefix
2001:0000::/322001::2001::ffff:ffff:ffff:ffff:ffff:ffff296Global InternetTeredo tunneling
2001:20::/28    2001:20::    2001:2f:ffff:ffff:ffff:ffff:ffff:ffff    2100SoftwareORCHIDv2



296DocumentationAddresses used in documentation and example source code
2002::/16
2002::
2002:ffff:ffff:ffff:ffff:ffff:ffff:ffff
2112Global InternetThe 6to4 addressing scheme (deprecated)
fc00::/7fc00::fdff:ffff:ffff:ffff:ffff:ffff:ffff:ffff2121Private InternetsUnique local address
fe80::/64 from fe80::/10fe80::fe80::ffff:ffff:ffff:ffff264LinkLink-local address
ff00::/8ff00::ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff2120Global InternetMulticast address