保留的 IPv4 地址

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

地址塊（CIDR）		範圍				地址數量	範圍	目的
0.0.0.0/8		0.0.0.0-0.255.255.255		16777216	軟體	用於廣播訊息到當前（“this”）[1]
10.0.0.0/8		10.0.0.0-10.255.255.255		16777216	專網	用於專網內的本地通訊[2]
100.64.0.0/10		100.64.0.0-100.127.255.255	4,194,304	專網	用於運營商級NAT[3]時服務提供商與其訂戶之間的通訊
127.0.0.0/8		127.0.0.0-127.255.255.255	16777216	主辦	用於本地主機的環回地址[4]
169.254.0.0/16		169.254.0.0-169.254.255.255	65536		子網	用於單個鏈路上兩個主機之間的鏈路本地地址，如果沒有指定IP地址，例如通常會從DHCP伺服器檢索[5]
172.16.0.0/12		172.16.0.0-172.31.255.255	1,048,576	專網	用於專網內的本地通訊[2]
192.0.0.0/24		192.0.0.0-192.0.0.255		256		專網	用於IANA IPv4專用地址登錄檔[6]
192.0.2.0/24		192.0.2.0-192.0.2.255		256		文件	分配為“TEST-NET”用於文件和示例。不應該被公開使用。[7]
192.88.99.0/24		192.88.99.0-192.88.99.255	256		網際網路	由6to4任意繼電器使用[8]
192.168.0.0/16		192.168.0.0-192.168.255.255	65536		專網	用於專網內的本地通訊[2]
198.18.0.0/15		198.18.0.0-198.19.255.255	131,072		專網	用於測試兩個單獨子網之間的網路間通訊[9]
198.51.100.0/24		198.51.100.0-198.51.100.255	256		文件	被分配為“TEST-NET-2”用於文件和示例。不應該被公開使用。[7]
203.0.113.0/24		203.0.113.0-203.0.113.255	256		文件	分配為“TEST-NET-3”用於文件和示例。不應該被公開使用。[7]
224.0.0.0/4		224.0.0.0-239.255.255.255	268435456	網際網路	保留為組播[10]
240.0.0.0/4		240.0.0.0-255.255.255.254	268435456	網際網路	保留供將來使用[11]
255.255.255.255/32	255.255.255.255			1		子網	保留為“有限廣播”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]