IPIP 地址列表: 251.*.*.* (251.0.*.* - 251.255.*.*)
這是第壹個字節為251，第二個字節在0 - 255之間，第三、第四字節可變動（下面為星號）的IP地址列表，表示為251.*.*.* (251.0.0.0 - 251.255.255.255)。
這個IP地址列表中包含256 * 256 * 256 = 16,777,216個IP地址，我們以其中壹個IP地址251.1.1.1為例，來描述這個IP的屬性：
但這只是其中1個IP地址的例子，並不代表這個列表中所有的IP地址都有同樣的屬性，如果需要了解其它IP和更詳細的IP地址段信息，請點擊下面列表中的標題鏈接。
二進制、十進制和十六進制的 IP 地址說明
IP 地址類別 A/B/C/D/E 和網絡 ID、主機 ID 的說明
內容:
2. E類IP地址列表
E類地址的前4位恒為1111，預置前4位為1意味著E類地址開始於128 + 64 + 32 + 16 = 240。 E類IP地址範圍：240.0.0.0 ~ 255.255.255.255。 E類IPv4地址不區分網絡地址與主機地址。 E類IP地址保留為以後使用，通常用於研究之用。因此Internet上沒有可用的E類地址。 如果您需要了解E類IP地址段詳情，可以點擊E類IP地址列表中的標題鏈接。
- 251.0.*.*(251.0.0.0 - 251.0.255.255)
- 251.1.*.*(251.1.0.0 - 251.1.255.255)
- 251.2.*.*(251.2.0.0 - 251.2.255.255)
- 251.3.*.*(251.3.0.0 - 251.3.255.255)
- 251.4.*.*(251.4.0.0 - 251.4.255.255)
- 251.5.*.*(251.5.0.0 - 251.5.255.255)
- 251.6.*.*(251.6.0.0 - 251.6.255.255)
- 251.7.*.*(251.7.0.0 - 251.7.255.255)
- 251.8.*.*(251.8.0.0 - 251.8.255.255)
- 251.9.*.*(251.9.0.0 - 251.9.255.255)
- 251.10.*.*(251.10.0.0 - 251.10.255.255)
- 251.11.*.*(251.11.0.0 - 251.11.255.255)
- 251.12.*.*(251.12.0.0 - 251.12.255.255)
- 251.13.*.*(251.13.0.0 - 251.13.255.255)
- 251.14.*.*(251.14.0.0 - 251.14.255.255)
- 251.15.*.*(251.15.0.0 - 251.15.255.255)
- 251.16.*.*(251.16.0.0 - 251.16.255.255)
- 251.17.*.*(251.17.0.0 - 251.17.255.255)
- 251.18.*.*(251.18.0.0 - 251.18.255.255)
- 251.19.*.*(251.19.0.0 - 251.19.255.255)
- 251.20.*.*(251.20.0.0 - 251.20.255.255)
- 251.21.*.*(251.21.0.0 - 251.21.255.255)
- 251.22.*.*(251.22.0.0 - 251.22.255.255)
- 251.23.*.*(251.23.0.0 - 251.23.255.255)
- 251.24.*.*(251.24.0.0 - 251.24.255.255)
- 251.25.*.*(251.25.0.0 - 251.25.255.255)
- 251.26.*.*(251.26.0.0 - 251.26.255.255)
- 251.27.*.*(251.27.0.0 - 251.27.255.255)
- 251.28.*.*(251.28.0.0 - 251.28.255.255)
- 251.29.*.*(251.29.0.0 - 251.29.255.255)
- 251.30.*.*(251.30.0.0 - 251.30.255.255)
- 251.31.*.*(251.31.0.0 - 251.31.255.255)
- 251.32.*.*(251.32.0.0 - 251.32.255.255)
- 251.33.*.*(251.33.0.0 - 251.33.255.255)
- 251.34.*.*(251.34.0.0 - 251.34.255.255)
- 251.35.*.*(251.35.0.0 - 251.35.255.255)
- 251.36.*.*(251.36.0.0 - 251.36.255.255)
- 251.37.*.*(251.37.0.0 - 251.37.255.255)
- 251.38.*.*(251.38.0.0 - 251.38.255.255)
- 251.39.*.*(251.39.0.0 - 251.39.255.255)
- 251.40.*.*(251.40.0.0 - 251.40.255.255)
- 251.41.*.*(251.41.0.0 - 251.41.255.255)
- 251.42.*.*(251.42.0.0 - 251.42.255.255)
- 251.43.*.*(251.43.0.0 - 251.43.255.255)
- 251.44.*.*(251.44.0.0 - 251.44.255.255)
- 251.45.*.*(251.45.0.0 - 251.45.255.255)
- 251.46.*.*(251.46.0.0 - 251.46.255.255)
- 251.47.*.*(251.47.0.0 - 251.47.255.255)
- 251.48.*.*(251.48.0.0 - 251.48.255.255)
- 251.49.*.*(251.49.0.0 - 251.49.255.255)
- 251.50.*.*(251.50.0.0 - 251.50.255.255)
- 251.51.*.*(251.51.0.0 - 251.51.255.255)
- 251.52.*.*(251.52.0.0 - 251.52.255.255)
- 251.53.*.*(251.53.0.0 - 251.53.255.255)
- 251.54.*.*(251.54.0.0 - 251.54.255.255)
- 251.55.*.*(251.55.0.0 - 251.55.255.255)
- 251.56.*.*(251.56.0.0 - 251.56.255.255)
- 251.57.*.*(251.57.0.0 - 251.57.255.255)
- 251.58.*.*(251.58.0.0 - 251.58.255.255)
- 251.59.*.*(251.59.0.0 - 251.59.255.255)
- 251.60.*.*(251.60.0.0 - 251.60.255.255)
- 251.61.*.*(251.61.0.0 - 251.61.255.255)
- 251.62.*.*(251.62.0.0 - 251.62.255.255)
- 251.63.*.*(251.63.0.0 - 251.63.255.255)
- 251.64.*.*(251.64.0.0 - 251.64.255.255)
- 251.65.*.*(251.65.0.0 - 251.65.255.255)
- 251.66.*.*(251.66.0.0 - 251.66.255.255)
- 251.67.*.*(251.67.0.0 - 251.67.255.255)
- 251.68.*.*(251.68.0.0 - 251.68.255.255)
- 251.69.*.*(251.69.0.0 - 251.69.255.255)
- 251.70.*.*(251.70.0.0 - 251.70.255.255)
- 251.71.*.*(251.71.0.0 - 251.71.255.255)
- 251.72.*.*(251.72.0.0 - 251.72.255.255)
- 251.73.*.*(251.73.0.0 - 251.73.255.255)
- 251.74.*.*(251.74.0.0 - 251.74.255.255)
- 251.75.*.*(251.75.0.0 - 251.75.255.255)
- 251.76.*.*(251.76.0.0 - 251.76.255.255)
- 251.77.*.*(251.77.0.0 - 251.77.255.255)
- 251.78.*.*(251.78.0.0 - 251.78.255.255)
- 251.79.*.*(251.79.0.0 - 251.79.255.255)
- 251.80.*.*(251.80.0.0 - 251.80.255.255)
- 251.81.*.*(251.81.0.0 - 251.81.255.255)
- 251.82.*.*(251.82.0.0 - 251.82.255.255)
- 251.83.*.*(251.83.0.0 - 251.83.255.255)
- 251.84.*.*(251.84.0.0 - 251.84.255.255)
- 251.85.*.*(251.85.0.0 - 251.85.255.255)
- 251.86.*.*(251.86.0.0 - 251.86.255.255)
- 251.87.*.*(251.87.0.0 - 251.87.255.255)
- 251.88.*.*(251.88.0.0 - 251.88.255.255)
- 251.89.*.*(251.89.0.0 - 251.89.255.255)
- 251.90.*.*(251.90.0.0 - 251.90.255.255)
- 251.91.*.*(251.91.0.0 - 251.91.255.255)
- 251.92.*.*(251.92.0.0 - 251.92.255.255)
- 251.93.*.*(251.93.0.0 - 251.93.255.255)
- 251.94.*.*(251.94.0.0 - 251.94.255.255)
- 251.95.*.*(251.95.0.0 - 251.95.255.255)
- 251.96.*.*(251.96.0.0 - 251.96.255.255)
- 251.97.*.*(251.97.0.0 - 251.97.255.255)
- 251.98.*.*(251.98.0.0 - 251.98.255.255)
- 251.99.*.*(251.99.0.0 - 251.99.255.255)
- 251.100.*.*(251.100.0.0 - 251.100.255.255)
- 251.101.*.*(251.101.0.0 - 251.101.255.255)
- 251.102.*.*(251.102.0.0 - 251.102.255.255)
- 251.103.*.*(251.103.0.0 - 251.103.255.255)
- 251.104.*.*(251.104.0.0 - 251.104.255.255)
- 251.105.*.*(251.105.0.0 - 251.105.255.255)
- 251.106.*.*(251.106.0.0 - 251.106.255.255)
- 251.107.*.*(251.107.0.0 - 251.107.255.255)
- 251.108.*.*(251.108.0.0 - 251.108.255.255)
- 251.109.*.*(251.109.0.0 - 251.109.255.255)
- 251.110.*.*(251.110.0.0 - 251.110.255.255)
- 251.111.*.*(251.111.0.0 - 251.111.255.255)
- 251.112.*.*(251.112.0.0 - 251.112.255.255)
- 251.113.*.*(251.113.0.0 - 251.113.255.255)
- 251.114.*.*(251.114.0.0 - 251.114.255.255)
- 251.115.*.*(251.115.0.0 - 251.115.255.255)
- 251.116.*.*(251.116.0.0 - 251.116.255.255)
- 251.117.*.*(251.117.0.0 - 251.117.255.255)
- 251.118.*.*(251.118.0.0 - 251.118.255.255)
- 251.119.*.*(251.119.0.0 - 251.119.255.255)
- 251.120.*.*(251.120.0.0 - 251.120.255.255)
- 251.121.*.*(251.121.0.0 - 251.121.255.255)
- 251.122.*.*(251.122.0.0 - 251.122.255.255)
- 251.123.*.*(251.123.0.0 - 251.123.255.255)
- 251.124.*.*(251.124.0.0 - 251.124.255.255)
- 251.125.*.*(251.125.0.0 - 251.125.255.255)
- 251.126.*.*(251.126.0.0 - 251.126.255.255)
- 251.127.*.*(251.127.0.0 - 251.127.255.255)
- 251.128.*.*(251.128.0.0 - 251.128.255.255)
- 251.129.*.*(251.129.0.0 - 251.129.255.255)
- 251.130.*.*(251.130.0.0 - 251.130.255.255)
- 251.131.*.*(251.131.0.0 - 251.131.255.255)
- 251.132.*.*(251.132.0.0 - 251.132.255.255)
- 251.133.*.*(251.133.0.0 - 251.133.255.255)
- 251.134.*.*(251.134.0.0 - 251.134.255.255)
- 251.135.*.*(251.135.0.0 - 251.135.255.255)
- 251.136.*.*(251.136.0.0 - 251.136.255.255)
- 251.137.*.*(251.137.0.0 - 251.137.255.255)
- 251.138.*.*(251.138.0.0 - 251.138.255.255)
- 251.139.*.*(251.139.0.0 - 251.139.255.255)
- 251.140.*.*(251.140.0.0 - 251.140.255.255)
- 251.141.*.*(251.141.0.0 - 251.141.255.255)
- 251.142.*.*(251.142.0.0 - 251.142.255.255)
- 251.143.*.*(251.143.0.0 - 251.143.255.255)
- 251.144.*.*(251.144.0.0 - 251.144.255.255)
- 251.145.*.*(251.145.0.0 - 251.145.255.255)
- 251.146.*.*(251.146.0.0 - 251.146.255.255)
- 251.147.*.*(251.147.0.0 - 251.147.255.255)
- 251.148.*.*(251.148.0.0 - 251.148.255.255)
- 251.149.*.*(251.149.0.0 - 251.149.255.255)
- 251.150.*.*(251.150.0.0 - 251.150.255.255)
- 251.151.*.*(251.151.0.0 - 251.151.255.255)
- 251.152.*.*(251.152.0.0 - 251.152.255.255)
- 251.153.*.*(251.153.0.0 - 251.153.255.255)
- 251.154.*.*(251.154.0.0 - 251.154.255.255)
- 251.155.*.*(251.155.0.0 - 251.155.255.255)
- 251.156.*.*(251.156.0.0 - 251.156.255.255)
- 251.157.*.*(251.157.0.0 - 251.157.255.255)
- 251.158.*.*(251.158.0.0 - 251.158.255.255)
- 251.159.*.*(251.159.0.0 - 251.159.255.255)
- 251.160.*.*(251.160.0.0 - 251.160.255.255)
- 251.161.*.*(251.161.0.0 - 251.161.255.255)
- 251.162.*.*(251.162.0.0 - 251.162.255.255)
- 251.163.*.*(251.163.0.0 - 251.163.255.255)
- 251.164.*.*(251.164.0.0 - 251.164.255.255)
- 251.165.*.*(251.165.0.0 - 251.165.255.255)
- 251.166.*.*(251.166.0.0 - 251.166.255.255)
- 251.167.*.*(251.167.0.0 - 251.167.255.255)
- 251.168.*.*(251.168.0.0 - 251.168.255.255)
- 251.169.*.*(251.169.0.0 - 251.169.255.255)
- 251.170.*.*(251.170.0.0 - 251.170.255.255)
- 251.171.*.*(251.171.0.0 - 251.171.255.255)
- 251.172.*.*(251.172.0.0 - 251.172.255.255)
- 251.173.*.*(251.173.0.0 - 251.173.255.255)
- 251.174.*.*(251.174.0.0 - 251.174.255.255)
- 251.175.*.*(251.175.0.0 - 251.175.255.255)
- 251.176.*.*(251.176.0.0 - 251.176.255.255)
- 251.177.*.*(251.177.0.0 - 251.177.255.255)
- 251.178.*.*(251.178.0.0 - 251.178.255.255)
- 251.179.*.*(251.179.0.0 - 251.179.255.255)
- 251.180.*.*(251.180.0.0 - 251.180.255.255)
- 251.181.*.*(251.181.0.0 - 251.181.255.255)
- 251.182.*.*(251.182.0.0 - 251.182.255.255)
- 251.183.*.*(251.183.0.0 - 251.183.255.255)
- 251.184.*.*(251.184.0.0 - 251.184.255.255)
- 251.185.*.*(251.185.0.0 - 251.185.255.255)
- 251.186.*.*(251.186.0.0 - 251.186.255.255)
- 251.187.*.*(251.187.0.0 - 251.187.255.255)
- 251.188.*.*(251.188.0.0 - 251.188.255.255)
- 251.189.*.*(251.189.0.0 - 251.189.255.255)
- 251.190.*.*(251.190.0.0 - 251.190.255.255)
- 251.191.*.*(251.191.0.0 - 251.191.255.255)
- 251.192.*.*(251.192.0.0 - 251.192.255.255)
- 251.193.*.*(251.193.0.0 - 251.193.255.255)
- 251.194.*.*(251.194.0.0 - 251.194.255.255)
- 251.195.*.*(251.195.0.0 - 251.195.255.255)
- 251.196.*.*(251.196.0.0 - 251.196.255.255)
- 251.197.*.*(251.197.0.0 - 251.197.255.255)
- 251.198.*.*(251.198.0.0 - 251.198.255.255)
- 251.199.*.*(251.199.0.0 - 251.199.255.255)
- 251.200.*.*(251.200.0.0 - 251.200.255.255)
- 251.201.*.*(251.201.0.0 - 251.201.255.255)
- 251.202.*.*(251.202.0.0 - 251.202.255.255)
- 251.203.*.*(251.203.0.0 - 251.203.255.255)
- 251.204.*.*(251.204.0.0 - 251.204.255.255)
- 251.205.*.*(251.205.0.0 - 251.205.255.255)
- 251.206.*.*(251.206.0.0 - 251.206.255.255)
- 251.207.*.*(251.207.0.0 - 251.207.255.255)
- 251.208.*.*(251.208.0.0 - 251.208.255.255)
- 251.209.*.*(251.209.0.0 - 251.209.255.255)
- 251.210.*.*(251.210.0.0 - 251.210.255.255)
- 251.211.*.*(251.211.0.0 - 251.211.255.255)
- 251.212.*.*(251.212.0.0 - 251.212.255.255)
- 251.213.*.*(251.213.0.0 - 251.213.255.255)
- 251.214.*.*(251.214.0.0 - 251.214.255.255)
- 251.215.*.*(251.215.0.0 - 251.215.255.255)
- 251.216.*.*(251.216.0.0 - 251.216.255.255)
- 251.217.*.*(251.217.0.0 - 251.217.255.255)
- 251.218.*.*(251.218.0.0 - 251.218.255.255)
- 251.219.*.*(251.219.0.0 - 251.219.255.255)
- 251.220.*.*(251.220.0.0 - 251.220.255.255)
- 251.221.*.*(251.221.0.0 - 251.221.255.255)
- 251.222.*.*(251.222.0.0 - 251.222.255.255)
- 251.223.*.*(251.223.0.0 - 251.223.255.255)
- 251.224.*.*(251.224.0.0 - 251.224.255.255)
- 251.225.*.*(251.225.0.0 - 251.225.255.255)
- 251.226.*.*(251.226.0.0 - 251.226.255.255)
- 251.227.*.*(251.227.0.0 - 251.227.255.255)
- 251.228.*.*(251.228.0.0 - 251.228.255.255)
- 251.229.*.*(251.229.0.0 - 251.229.255.255)
- 251.230.*.*(251.230.0.0 - 251.230.255.255)
- 251.231.*.*(251.231.0.0 - 251.231.255.255)
- 251.232.*.*(251.232.0.0 - 251.232.255.255)
- 251.233.*.*(251.233.0.0 - 251.233.255.255)
- 251.234.*.*(251.234.0.0 - 251.234.255.255)
- 251.235.*.*(251.235.0.0 - 251.235.255.255)
- 251.236.*.*(251.236.0.0 - 251.236.255.255)
- 251.237.*.*(251.237.0.0 - 251.237.255.255)
- 251.238.*.*(251.238.0.0 - 251.238.255.255)
- 251.239.*.*(251.239.0.0 - 251.239.255.255)
- 251.240.*.*(251.240.0.0 - 251.240.255.255)
- 251.241.*.*(251.241.0.0 - 251.241.255.255)
- 251.242.*.*(251.242.0.0 - 251.242.255.255)
- 251.243.*.*(251.243.0.0 - 251.243.255.255)
- 251.244.*.*(251.244.0.0 - 251.244.255.255)
- 251.245.*.*(251.245.0.0 - 251.245.255.255)
- 251.246.*.*(251.246.0.0 - 251.246.255.255)
- 251.247.*.*(251.247.0.0 - 251.247.255.255)
- 251.248.*.*(251.248.0.0 - 251.248.255.255)
- 251.249.*.*(251.249.0.0 - 251.249.255.255)
- 251.250.*.*(251.250.0.0 - 251.250.255.255)
- 251.251.*.*(251.251.0.0 - 251.251.255.255)
- 251.252.*.*(251.252.0.0 - 251.252.255.255)
- 251.253.*.*(251.253.0.0 - 251.253.255.255)
- 251.254.*.*(251.254.0.0 - 251.254.255.255)
- 251.255.*.*(251.255.0.0 - 251.255.255.255)
3. 最後一個 IP 地址示例
圖標/圖像含義表
251.255.255.255是一個保留的IP地址。保留的IP地址段不會在互聯網上使用，因此與廣域網相連的路由器在處理保留IP地址時，只是將該數據包丟棄處理，而不會路由到廣域網上去。從而將保留IP地址產生的數據隔離在局域網內部。更多詳情：251.255.255.255。
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