IP 地址列表: 10.21.*.* (10.21.0.* - 10.21.255.*)

IPSHU ^©

您在這裡

這是第壹個字節為10，第二個字節為21，第三個字節在0 - 255之間，第四字節可變動（下面為星號）的IP地址列表，表示為10.21.*.* (10.21.0.0 - 10.21.255.255)。

這個IP地址列表中包含256 * 256 = 65,536個IP地址，我們以其中壹個IP地址10.21.1.1為例，來描述這個IP的屬性：

第一個 IP 地址示例

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。

IPv4: 10.21 Network Class, Net ID, Host ID

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. A類IP地址列表

A類IP地址是指：在IP地址的四段號碼（例如：字節1.字節2.字節3.字節4）中，第壹段號碼（字節1）為網絡號碼，剩下的後三段號碼（字節2.字節3.字節4）為本地計算機的號碼。

如果用二進制表示IP地址的話，A類IP地址就由1字節的網絡地址和3字節主機地址組成，網絡地址的最高位必須是'0'。

A類IP地址範圍：1.0.0.0 ~ 127.255.255.255，可用IP地址範圍：1.0.0.1 ~ 127.255.255.254。

A類IP地址中網絡的標識長度為7位，主機標識的長度為24位，A類網絡地址數量較少（2 ^ 7 - 2 = 126個），可以用於容納1600多萬計算機的大型網絡（2 ^ 24 - 2 = 16777214個）。

如果您需要了解A類IP段更詳細的IP地址信息，請點擊A類IP地址列表中的標題鏈接。

10.21.0.*(10.21.0.0 - 10.21.0.254)
10.21.1.*(10.21.1.0 - 10.21.1.254)
10.21.2.*(10.21.2.0 - 10.21.2.254)
10.21.3.*(10.21.3.0 - 10.21.3.254)
10.21.4.*(10.21.4.0 - 10.21.4.254)
10.21.5.*(10.21.5.0 - 10.21.5.254)
10.21.6.*(10.21.6.0 - 10.21.6.254)
10.21.7.*(10.21.7.0 - 10.21.7.254)
10.21.8.*(10.21.8.0 - 10.21.8.254)
10.21.9.*(10.21.9.0 - 10.21.9.254)
10.21.10.*(10.21.10.0 - 10.21.10.254)
10.21.11.*(10.21.11.0 - 10.21.11.254)
10.21.12.*(10.21.12.0 - 10.21.12.254)
10.21.13.*(10.21.13.0 - 10.21.13.254)
10.21.14.*(10.21.14.0 - 10.21.14.254)
10.21.15.*(10.21.15.0 - 10.21.15.254)
10.21.16.*(10.21.16.0 - 10.21.16.254)
10.21.17.*(10.21.17.0 - 10.21.17.254)
10.21.18.*(10.21.18.0 - 10.21.18.254)
10.21.19.*(10.21.19.0 - 10.21.19.254)
10.21.20.*(10.21.20.0 - 10.21.20.254)
10.21.21.*(10.21.21.0 - 10.21.21.254)
10.21.22.*(10.21.22.0 - 10.21.22.254)
10.21.23.*(10.21.23.0 - 10.21.23.254)
10.21.24.*(10.21.24.0 - 10.21.24.254)
10.21.25.*(10.21.25.0 - 10.21.25.254)
10.21.26.*(10.21.26.0 - 10.21.26.254)
10.21.27.*(10.21.27.0 - 10.21.27.254)
10.21.28.*(10.21.28.0 - 10.21.28.254)
10.21.29.*(10.21.29.0 - 10.21.29.254)
10.21.30.*(10.21.30.0 - 10.21.30.254)
10.21.31.*(10.21.31.0 - 10.21.31.254)
10.21.32.*(10.21.32.0 - 10.21.32.254)
10.21.33.*(10.21.33.0 - 10.21.33.254)
10.21.34.*(10.21.34.0 - 10.21.34.254)
10.21.35.*(10.21.35.0 - 10.21.35.254)
10.21.36.*(10.21.36.0 - 10.21.36.254)
10.21.37.*(10.21.37.0 - 10.21.37.254)
10.21.38.*(10.21.38.0 - 10.21.38.254)
10.21.39.*(10.21.39.0 - 10.21.39.254)
10.21.40.*(10.21.40.0 - 10.21.40.254)
10.21.41.*(10.21.41.0 - 10.21.41.254)
10.21.42.*(10.21.42.0 - 10.21.42.254)
10.21.43.*(10.21.43.0 - 10.21.43.254)
10.21.44.*(10.21.44.0 - 10.21.44.254)
10.21.45.*(10.21.45.0 - 10.21.45.254)
10.21.46.*(10.21.46.0 - 10.21.46.254)
10.21.47.*(10.21.47.0 - 10.21.47.254)
10.21.48.*(10.21.48.0 - 10.21.48.254)
10.21.49.*(10.21.49.0 - 10.21.49.254)
10.21.50.*(10.21.50.0 - 10.21.50.254)
10.21.51.*(10.21.51.0 - 10.21.51.254)
10.21.52.*(10.21.52.0 - 10.21.52.254)
10.21.53.*(10.21.53.0 - 10.21.53.254)
10.21.54.*(10.21.54.0 - 10.21.54.254)
10.21.55.*(10.21.55.0 - 10.21.55.254)
10.21.56.*(10.21.56.0 - 10.21.56.254)
10.21.57.*(10.21.57.0 - 10.21.57.254)
10.21.58.*(10.21.58.0 - 10.21.58.254)
10.21.59.*(10.21.59.0 - 10.21.59.254)
10.21.60.*(10.21.60.0 - 10.21.60.254)
10.21.61.*(10.21.61.0 - 10.21.61.254)
10.21.62.*(10.21.62.0 - 10.21.62.254)
10.21.63.*(10.21.63.0 - 10.21.63.254)
10.21.64.*(10.21.64.0 - 10.21.64.254)
10.21.65.*(10.21.65.0 - 10.21.65.254)
10.21.66.*(10.21.66.0 - 10.21.66.254)
10.21.67.*(10.21.67.0 - 10.21.67.254)
10.21.68.*(10.21.68.0 - 10.21.68.254)
10.21.69.*(10.21.69.0 - 10.21.69.254)
10.21.70.*(10.21.70.0 - 10.21.70.254)
10.21.71.*(10.21.71.0 - 10.21.71.254)
10.21.72.*(10.21.72.0 - 10.21.72.254)
10.21.73.*(10.21.73.0 - 10.21.73.254)
10.21.74.*(10.21.74.0 - 10.21.74.254)
10.21.75.*(10.21.75.0 - 10.21.75.254)
10.21.76.*(10.21.76.0 - 10.21.76.254)
10.21.77.*(10.21.77.0 - 10.21.77.254)
10.21.78.*(10.21.78.0 - 10.21.78.254)
10.21.79.*(10.21.79.0 - 10.21.79.254)
10.21.80.*(10.21.80.0 - 10.21.80.254)
10.21.81.*(10.21.81.0 - 10.21.81.254)
10.21.82.*(10.21.82.0 - 10.21.82.254)
10.21.83.*(10.21.83.0 - 10.21.83.254)
10.21.84.*(10.21.84.0 - 10.21.84.254)
10.21.85.*(10.21.85.0 - 10.21.85.254)
10.21.86.*(10.21.86.0 - 10.21.86.254)
10.21.87.*(10.21.87.0 - 10.21.87.254)
10.21.88.*(10.21.88.0 - 10.21.88.254)
10.21.89.*(10.21.89.0 - 10.21.89.254)
10.21.90.*(10.21.90.0 - 10.21.90.254)
10.21.91.*(10.21.91.0 - 10.21.91.254)
10.21.92.*(10.21.92.0 - 10.21.92.254)
10.21.93.*(10.21.93.0 - 10.21.93.254)
10.21.94.*(10.21.94.0 - 10.21.94.254)
10.21.95.*(10.21.95.0 - 10.21.95.254)
10.21.96.*(10.21.96.0 - 10.21.96.254)
10.21.97.*(10.21.97.0 - 10.21.97.254)
10.21.98.*(10.21.98.0 - 10.21.98.254)
10.21.99.*(10.21.99.0 - 10.21.99.254)
10.21.100.*(10.21.100.0 - 10.21.100.254)
10.21.101.*(10.21.101.0 - 10.21.101.254)
10.21.102.*(10.21.102.0 - 10.21.102.254)
10.21.103.*(10.21.103.0 - 10.21.103.254)
10.21.104.*(10.21.104.0 - 10.21.104.254)
10.21.105.*(10.21.105.0 - 10.21.105.254)
10.21.106.*(10.21.106.0 - 10.21.106.254)
10.21.107.*(10.21.107.0 - 10.21.107.254)
10.21.108.*(10.21.108.0 - 10.21.108.254)
10.21.109.*(10.21.109.0 - 10.21.109.254)
10.21.110.*(10.21.110.0 - 10.21.110.254)
10.21.111.*(10.21.111.0 - 10.21.111.254)
10.21.112.*(10.21.112.0 - 10.21.112.254)
10.21.113.*(10.21.113.0 - 10.21.113.254)
10.21.114.*(10.21.114.0 - 10.21.114.254)
10.21.115.*(10.21.115.0 - 10.21.115.254)
10.21.116.*(10.21.116.0 - 10.21.116.254)
10.21.117.*(10.21.117.0 - 10.21.117.254)
10.21.118.*(10.21.118.0 - 10.21.118.254)
10.21.119.*(10.21.119.0 - 10.21.119.254)
10.21.120.*(10.21.120.0 - 10.21.120.254)
10.21.121.*(10.21.121.0 - 10.21.121.254)
10.21.122.*(10.21.122.0 - 10.21.122.254)
10.21.123.*(10.21.123.0 - 10.21.123.254)
10.21.124.*(10.21.124.0 - 10.21.124.254)
10.21.125.*(10.21.125.0 - 10.21.125.254)
10.21.126.*(10.21.126.0 - 10.21.126.254)
10.21.127.*(10.21.127.0 - 10.21.127.254)
10.21.128.*(10.21.128.0 - 10.21.128.254)
10.21.129.*(10.21.129.0 - 10.21.129.254)
10.21.130.*(10.21.130.0 - 10.21.130.254)
10.21.131.*(10.21.131.0 - 10.21.131.254)
10.21.132.*(10.21.132.0 - 10.21.132.254)
10.21.133.*(10.21.133.0 - 10.21.133.254)
10.21.134.*(10.21.134.0 - 10.21.134.254)
10.21.135.*(10.21.135.0 - 10.21.135.254)
10.21.136.*(10.21.136.0 - 10.21.136.254)
10.21.137.*(10.21.137.0 - 10.21.137.254)
10.21.138.*(10.21.138.0 - 10.21.138.254)
10.21.139.*(10.21.139.0 - 10.21.139.254)
10.21.140.*(10.21.140.0 - 10.21.140.254)
10.21.141.*(10.21.141.0 - 10.21.141.254)
10.21.142.*(10.21.142.0 - 10.21.142.254)
10.21.143.*(10.21.143.0 - 10.21.143.254)
10.21.144.*(10.21.144.0 - 10.21.144.254)
10.21.145.*(10.21.145.0 - 10.21.145.254)
10.21.146.*(10.21.146.0 - 10.21.146.254)
10.21.147.*(10.21.147.0 - 10.21.147.254)
10.21.148.*(10.21.148.0 - 10.21.148.254)
10.21.149.*(10.21.149.0 - 10.21.149.254)
10.21.150.*(10.21.150.0 - 10.21.150.254)
10.21.151.*(10.21.151.0 - 10.21.151.254)
10.21.152.*(10.21.152.0 - 10.21.152.254)
10.21.153.*(10.21.153.0 - 10.21.153.254)
10.21.154.*(10.21.154.0 - 10.21.154.254)
10.21.155.*(10.21.155.0 - 10.21.155.254)
10.21.156.*(10.21.156.0 - 10.21.156.254)
10.21.157.*(10.21.157.0 - 10.21.157.254)
10.21.158.*(10.21.158.0 - 10.21.158.254)
10.21.159.*(10.21.159.0 - 10.21.159.254)
10.21.160.*(10.21.160.0 - 10.21.160.254)
10.21.161.*(10.21.161.0 - 10.21.161.254)
10.21.162.*(10.21.162.0 - 10.21.162.254)
10.21.163.*(10.21.163.0 - 10.21.163.254)
10.21.164.*(10.21.164.0 - 10.21.164.254)
10.21.165.*(10.21.165.0 - 10.21.165.254)
10.21.166.*(10.21.166.0 - 10.21.166.254)
10.21.167.*(10.21.167.0 - 10.21.167.254)
10.21.168.*(10.21.168.0 - 10.21.168.254)
10.21.169.*(10.21.169.0 - 10.21.169.254)
10.21.170.*(10.21.170.0 - 10.21.170.254)
10.21.171.*(10.21.171.0 - 10.21.171.254)
10.21.172.*(10.21.172.0 - 10.21.172.254)
10.21.173.*(10.21.173.0 - 10.21.173.254)
10.21.174.*(10.21.174.0 - 10.21.174.254)
10.21.175.*(10.21.175.0 - 10.21.175.254)
10.21.176.*(10.21.176.0 - 10.21.176.254)
10.21.177.*(10.21.177.0 - 10.21.177.254)
10.21.178.*(10.21.178.0 - 10.21.178.254)
10.21.179.*(10.21.179.0 - 10.21.179.254)
10.21.180.*(10.21.180.0 - 10.21.180.254)
10.21.181.*(10.21.181.0 - 10.21.181.254)
10.21.182.*(10.21.182.0 - 10.21.182.254)
10.21.183.*(10.21.183.0 - 10.21.183.254)
10.21.184.*(10.21.184.0 - 10.21.184.254)
10.21.185.*(10.21.185.0 - 10.21.185.254)
10.21.186.*(10.21.186.0 - 10.21.186.254)
10.21.187.*(10.21.187.0 - 10.21.187.254)
10.21.188.*(10.21.188.0 - 10.21.188.254)
10.21.189.*(10.21.189.0 - 10.21.189.254)
10.21.190.*(10.21.190.0 - 10.21.190.254)
10.21.191.*(10.21.191.0 - 10.21.191.254)
10.21.192.*(10.21.192.0 - 10.21.192.254)
10.21.193.*(10.21.193.0 - 10.21.193.254)
10.21.194.*(10.21.194.0 - 10.21.194.254)
10.21.195.*(10.21.195.0 - 10.21.195.254)
10.21.196.*(10.21.196.0 - 10.21.196.254)
10.21.197.*(10.21.197.0 - 10.21.197.254)
10.21.198.*(10.21.198.0 - 10.21.198.254)
10.21.199.*(10.21.199.0 - 10.21.199.254)
10.21.200.*(10.21.200.0 - 10.21.200.254)
10.21.201.*(10.21.201.0 - 10.21.201.254)
10.21.202.*(10.21.202.0 - 10.21.202.254)
10.21.203.*(10.21.203.0 - 10.21.203.254)
10.21.204.*(10.21.204.0 - 10.21.204.254)
10.21.205.*(10.21.205.0 - 10.21.205.254)
10.21.206.*(10.21.206.0 - 10.21.206.254)
10.21.207.*(10.21.207.0 - 10.21.207.254)
10.21.208.*(10.21.208.0 - 10.21.208.254)
10.21.209.*(10.21.209.0 - 10.21.209.254)
10.21.210.*(10.21.210.0 - 10.21.210.254)
10.21.211.*(10.21.211.0 - 10.21.211.254)
10.21.212.*(10.21.212.0 - 10.21.212.254)
10.21.213.*(10.21.213.0 - 10.21.213.254)
10.21.214.*(10.21.214.0 - 10.21.214.254)
10.21.215.*(10.21.215.0 - 10.21.215.254)
10.21.216.*(10.21.216.0 - 10.21.216.254)
10.21.217.*(10.21.217.0 - 10.21.217.254)
10.21.218.*(10.21.218.0 - 10.21.218.254)
10.21.219.*(10.21.219.0 - 10.21.219.254)
10.21.220.*(10.21.220.0 - 10.21.220.254)
10.21.221.*(10.21.221.0 - 10.21.221.254)
10.21.222.*(10.21.222.0 - 10.21.222.254)
10.21.223.*(10.21.223.0 - 10.21.223.254)
10.21.224.*(10.21.224.0 - 10.21.224.254)
10.21.225.*(10.21.225.0 - 10.21.225.254)
10.21.226.*(10.21.226.0 - 10.21.226.254)
10.21.227.*(10.21.227.0 - 10.21.227.254)
10.21.228.*(10.21.228.0 - 10.21.228.254)
10.21.229.*(10.21.229.0 - 10.21.229.254)
10.21.230.*(10.21.230.0 - 10.21.230.254)
10.21.231.*(10.21.231.0 - 10.21.231.254)
10.21.232.*(10.21.232.0 - 10.21.232.254)
10.21.233.*(10.21.233.0 - 10.21.233.254)
10.21.234.*(10.21.234.0 - 10.21.234.254)
10.21.235.*(10.21.235.0 - 10.21.235.254)
10.21.236.*(10.21.236.0 - 10.21.236.254)
10.21.237.*(10.21.237.0 - 10.21.237.254)
10.21.238.*(10.21.238.0 - 10.21.238.254)
10.21.239.*(10.21.239.0 - 10.21.239.254)
10.21.240.*(10.21.240.0 - 10.21.240.254)
10.21.241.*(10.21.241.0 - 10.21.241.254)
10.21.242.*(10.21.242.0 - 10.21.242.254)
10.21.243.*(10.21.243.0 - 10.21.243.254)
10.21.244.*(10.21.244.0 - 10.21.244.254)
10.21.245.*(10.21.245.0 - 10.21.245.254)
10.21.246.*(10.21.246.0 - 10.21.246.254)
10.21.247.*(10.21.247.0 - 10.21.247.254)
10.21.248.*(10.21.248.0 - 10.21.248.254)
10.21.249.*(10.21.249.0 - 10.21.249.254)
10.21.250.*(10.21.250.0 - 10.21.250.254)
10.21.251.*(10.21.251.0 - 10.21.251.254)
10.21.252.*(10.21.252.0 - 10.21.252.254)
10.21.253.*(10.21.253.0 - 10.21.253.254)
10.21.254.*(10.21.254.0 - 10.21.254.254)
10.21.255.*(10.21.255.0 - 10.21.255.254)

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您在這裡

IP 地址列表: 10.21.. (10.21.0.* - 10.21.255.*)

內容:

1. 第一個 IP 地址示例

2. A類IP地址列表

3. 最後一個 IP 地址示例

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默認登錄IP列表

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