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引用:

来源-维基百科

RFC5735描述ip规划

|保留地址段|地址起始|IP地址数量|用途
| ------------ | ------------ | ------------ | ------------ |
|0.0.0.0/8 |0.0.0.0 – 0.255.255.255 |16,777,216 |软件
|10.0.0.0/8 |10.0.0.0 – 10.255.255.255 |16,777,216 |内网
|100.64.0.0/10 |100.64.0.0 – 100.127.255.255 |4,194,304 |内网
|127.0.0.0/8 |127.0.0.0 – 127.255.255.255 |16,777,216 |主机(本机)
|169.254.0.0/16 |169.254.0.0 – 169.254.255.255 |65,536 |本地子网(DHCP Failed)
|172.16.0.0/12 |172.16.0.0 – 172.31.255.255 |1,048,576 |内网
|192.0.0.0/24 |192.0.0.0 – 192.0.0.255 |256 |内网
|192.0.2.0/24 |192.0.2.0 – 192.0.2.255 |256 |“TEST-NET”
|192.88.99.0/24 |192.88.99.0 – 192.88.99.255 |256 |6to4 anycast
|192.168.0.0/16 |192.168.0.0 – 192.168.255.255 |65,536 |内网
|198.18.0.0/15 |198.18.0.0 – 198.19.255.255 |131,072 |内网
|198.51.100.0/24 |198.51.100.0 – 198.51.100.255 |256 |“TEST-NET-2″
|203.0.113.0/24 |203.0.113.0 – 203.0.113.255 |256 |“TEST-NET-3″
|224.0.0.0/4 |224.0.0.0 – 239.255.255.255 |268,435,455 |预留
|240.0.0.0/4 |240.0.0.0 – 255.255.255.254 |268,435,455 |预留
|255.255.255.255/32 |255.255.255.255 |1 |广播

一般常用的内网地址:

127.0.0.0/8
192.168.0.0/16
172.16.0.0/12

维基百科中出现了一些我是没见过的但是被算作保留的地址段:

100.64.0.0/10 (运营商级(Carrier-grade)NAT保留IP地址)

192.0.0.0/24 IANA IPv4 Special-Purpose Address Registry(互联网数字分配机构 专用注册ip段)

192.0.2.0/24 IANA TEST-NET-1

192.88.99.0/24 (This block is allocated for use as 6to4 relay anycast addresses)

198.18.0.0/15 (This block has been allocated for use in benchmark tests of network interconnect devices)

198.51.100.0/24 (This block is assigned as "TEST-NET-2" for use in documentation and example code)

203.0.113.0/24 (This block is assigned as "TEST-NET-3" for use in documentation and example code)


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