保留的 IPv4 地址

保留的IP地址   https://en.wikipedia.org/wiki/Reserved_IP_addresses

地址块（CIDR）		范围				地址数量	范围	目的
0.0.0.0/8		0.0.0.0-0.255.255.255		16777216	软件	用于广播消息到当前（“this”）[1]
10.0.0.0/8		10.0.0.0-10.255.255.255		16777216	专网	用于专网内的本地通信[2]
100.64.0.0/10		100.64.0.0-100.127.255.255	4,194,304	专网	用于运营商级NAT[3]时服务提供商与其订户之间的通信
127.0.0.0/8		127.0.0.0-127.255.255.255	16777216	主办	用于本地主机的环回地址[4]
169.254.0.0/16		169.254.0.0-169.254.255.255	65536		子网	用于单个链路上两个主机之间的链路本地地址，如果没有指定IP地址，例如通常会从DHCP服务器检索[5]
172.16.0.0/12		172.16.0.0-172.31.255.255	1,048,576	专网	用于专网内的本地通信[2]
192.0.0.0/24		192.0.0.0-192.0.0.255		256		专网	用于IANA IPv4专用地址注册表[6]
192.0.2.0/24		192.0.2.0-192.0.2.255		256		文档	分配为“TEST-NET”用于文档和示例。不应该被公开使用。[7]
192.88.99.0/24		192.88.99.0-192.88.99.255	256		互联网	由6to4任意继电器使用[8]
192.168.0.0/16		192.168.0.0-192.168.255.255	65536		专网	用于专网内的本地通信[2]
198.18.0.0/15		198.18.0.0-198.19.255.255	131,072		专网	用于测试两个单独子网之间的网络间通信[9]
198.51.100.0/24		198.51.100.0-198.51.100.255	256		文档	被分配为“TEST-NET-2”用于文档和示例。不应该被公开使用。[7]
203.0.113.0/24		203.0.113.0-203.0.113.255	256		文档	分配为“TEST-NET-3”用于文档和示例。不应该被公开使用。[7]
224.0.0.0/4		224.0.0.0-239.255.255.255	268435456	互联网	保留为组播[10]
240.0.0.0/4		240.0.0.0-255.255.255.254	268435456	互联网	保留供将来使用[11]
255.255.255.255/32	255.255.255.255			1		子网	保留为“有限广播”目的地址[11]

英文描述

Address block (CIDR)	Range					Number of addresses	Scope			Purpose
0.0.0.0/8		0.0.0.0 –0.255.255.255			16,777,216		Software		Used for broadcast messages to the current ("this")[1]
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[2]
100.64.0.0/10		100.64.0.0 –100.127.255.255		4,194,304		Private network		Used for communications between a service provider and its subscribers when using a carrier-grade NAT[3]
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[4]
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[5]
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[2]
192.0.0.0/24		192.0.0.0 –192.0.0.255			256			Private network		Used for the IANA IPv4 Special Purpose Address Registry[6]
192.0.2.0/24		192.0.2.0 –192.0.2.255			256			Documentation		Assigned as "TEST-NET" for use in documentation and examples. It should not be used publicly.[7]
192.88.99.0/24		192.88.99.0 –192.88.99.255		256			Internet		Used by 6to4 anycast relays[8]
192.168.0.0/16		192.168.0.0 –192.168.255.255		65,536			Private network		Used for local communications within a private network[2]
198.18.0.0/15		198.18.0.0 –198.19.255.255		131,072			Private network		Used for testing of inter-network communications between two separate subnets[9]
198.51.100.0/24		198.51.100.0 –198.51.100.255		256			Documentation		Assigned as "TEST-NET-2" for use in documentation and examples. It should not be used publicly.[7]
203.0.113.0/24		203.0.113.0 –203.0.113.255		256			Documentation		Assigned as "TEST-NET-3" for use in documentation and examples. It should not be used publicly.[7]
224.0.0.0/4		224.0.0.0 –239.255.255.255		268,435,456		Internet		Reserved for multicast[10]
240.0.0.0/4		240.0.0.0 –255.255.255.254		268,435,456		Internet		Reserved for future use[11]
255.255.255.255/32	255.255.255.255				1			Subnet			Reserved for the "limited broadcast" destination address[11]