Reserved IP addresses
Reserved IP addressesFrom Wikipedia, the free encyclopedia
In the Internet addressing architecture, the Internet Engineering Task Force (IETF) and the Internet Assigned Numbers Authority (IANA) have reserved various Internet Protocol (IP) addresses for special purposes. These IP addresses may be used for maintenance of routing tables, multicast, operation under failure modes, or to provide addressing space for public, unrestricted uses.
The IETF sets the guidelines for use of the IP address space in RFC specifications, and directs IANA to implement the policies. Reserved IP addresses tend to belong to three categories: addresses that are globally unique, addresses that are unique to the subnet, and addresses that are only relevant to the host using the address.[citation needed]
Contents[hide]
[*]1 Reserved IPv4 addresses
[*]2 Reserved IPv6 addresses
[*]3 References
Reserved IPv4 addresses[edit]
CIDRAddress RangeNumber of AddressesScopePurpose
0.0.0.0/80.0.0.0 –
0.255.255.25516,777,216softwareUsed for broadcast messages to the current ("this") network as specified by RFC 1700, page 4.
10.0.0.0/810.0.0.0 –
10.255.255.25516,777,216private networkUsed for local communications within a private network as specified by RFC 1918.
100.64.0.0/10100.64.0.0 –
100.127.255.2554,194,304private networkUsed for communications between a service provider and its subscribers when using a Carrier-grade NAT, as specified by RFC 6598.
127.0.0.0/8127.0.0.0 –
127.255.255.25516,777,216hostUsed for loopback addresses to the local host, as specified by RFC 990.
169.254.0.0/16169.254.0.0 –
169.254.255.25565,536subnetUsed 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, as specified by RFC 3927.
172.16.0.0/12172.16.0.0 –
172.31.255.2551,048,576private networkUsed for local communications within a private network as specified by RFC 1918
192.0.0.0/24192.0.0.0 –
192.0.0.255256private networkUsed for the IANA IPv4 Special Purpose Address Registry as specified by RFC 5736
192.0.2.0/24192.0.2.0 –
192.0.2.255256documentationAssigned as "TEST-NET" in RFC 5737 for use solely in documentation and example source code and should not be used publicly.
192.88.99.0/24192.88.99.0 –
192.88.99.255256InternetUsed by 6to4 anycast relays as specified by RFC 3068.
192.168.0.0/16192.168.0.0 –
192.168.255.25565,536private networkUsed for local communications within a private network as specified by RFC 1918.
198.18.0.0/15198.18.0.0 –
198.19.255.255131,072private networkUsed for testing of inter-network communications between two separate subnets as specified in RFC 2544.
198.51.100.0/24198.51.100.0 –
198.51.100.255256documentationAssigned as "TEST-NET-2" in RFC 5737 for use solely in documentation and example source code and should not be used publicly.
203.0.113.0/24203.0.113.0 –
203.0.113.255256documentationAssigned as "TEST-NET-3" in RFC 5737 for use solely in documentation and example source code and should not be used publicly.
224.0.0.0/4224.0.0.0 –
239.255.255.255268,435,456InternetReserved for multicast assignments as specified in RFC 5771. 233.252.0.0/24 is assigned as "MCAST-TEST-NET" for use solely in documentation and example source code.
240.0.0.0/4240.0.0.0 –
255.255.255.254268,435,455n/aReserved for future use, as specified by RFC 6890.
255.255.255.255/32255.255.255.2551n/aReserved for the "limited broadcast" destination address, as specified by RFC 6890.
Reserved IPv6 addresses[edit]
CIDRAddress RangeNumber of AddressesscopePurpose
::/128::1softwareUnspecified address
::1/128::11hostloopback address to the local host.
::ffff:0:0/96::ffff:0.0.0.0 – ::ffff:255.255.255.255232softwareIPv4 mapped addresses
100::/64100:: – 100::ffff:ffff:ffff:ffff264Discard Prefix RFC 6666
64:ff9b::/9664:ff9b::0.0.0.0 – 64:ff9b::255.255.255.255232global Internet[1IPv4/IPv6 translation (RFC 6052)
2001::/322001:: – 2001::ffff:ffff:ffff:ffff:ffff:ffff296globalTeredo tunneling
2001:10::/282001:10:: – 2001:1f:ffff:ffff:ffff:ffff:ffff:ffff2100softwareDeprecated (previously ORCHID)
2001:20::/282001:20:: – 2001:2f:ffff:ffff:ffff:ffff:ffff:ffff2100softwareORCHIDv2
2001:db8::/322001:db8:: – 2001:db8:ffff:ffff:ffff:ffff:ffff:ffff296documentationAddresses used in documentation
2002::/162002:: – 2002:ffff:ffff:ffff:ffff:ffff:ffff:ffff2112global Internet6to4
fc00::/7fc00:: – fdff:ffff:ffff:ffff:ffff:ffff:ffff:ffff2121private networkUnique local address
fe80::/10fe80:: - febf:ffff:ffff:ffff:ffff:ffff:ffff:ffff2118linkLink-local address
ff00::/8ff00:: – ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff2120global InternetMulticast
References[edit]
[*]RFC 5635
[*]
[*]RFC 6890
[*]IANA IPv4 Special-Purpose Address Registry
[*]IANA IPv6 Special-Purpose Address Registry
[*]Jump up ^ RFC 6052 section 3.2
保留IP，很好的资料，收藏了 求鸟文翻译一名 不错，收藏了。顺便问下，啥叫环回呀？{:1_443:} 现在看不懂。先收藏了。
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