221.81开头的IP是哪里的IP,IP地址列表: 221.81.*.* (221.81.0.* - 221.81.255.*)

IPSHU ^©

这是第一个字节为221，第二个字节为81，第三个字节在0 - 255之间，第四字节可变动（下面为星号）的IP地址列表，表示为221.81.*.* (221.81.0.0 - 221.81.255.255)。

这个IP地址列表中包含256 * 256 = 65,536个IP地址，我们以其中一个IP地址221.81.1.1为例，来描述这个IP的属性：

第一个IP地址例子

但这只是其中1个IP地址的例子，并不代表这个列表中所有的IP地址都有同样的属性，如果需要了解其它IP和更详细的IP地址段信息，请点击下面列表中的标题链接。

关于IP地址2进制、10进制、16进制的说明关于网络号、主机号及A/B/C/D/E类IP的说明

内容:

2. C类IP地址列表

C类IP地址是指：在IP地址的四段号码（例如：字节1.字节2.字节3.字节4）中，前三段号码（字节1.字节2.字节3）为网络号码，剩下的后一段号码（字节4）为本地计算机的号码。

如果用二进制表示IP地址的话，C类IP地址就由３字节的网络地址和1字节主机地址组成，网络地址的最高位必须是'110'。

C类IP地址范围：192.0.0.0 ~ 223.255.255.255，可用IP地址范围：192.0.0.1 ~ 223.255.255.254。

C类IP地址中网络的标识长度为21位，主机标识的长度为8位，C类网络地址数量较多（2 ^ 21 = 2097152个），适用于小规模的局域网络，每个网络最多只能包含254台计算机（2 ^ 8 - 2 = 254个）。

如果您需要了解C类IP地址段详情，可以点击C类IP地址列表中的标题链接。

221.81.0.*(221.81.0.0 - 221.81.0.254)
221.81.1.*(221.81.1.0 - 221.81.1.254)
221.81.2.*(221.81.2.0 - 221.81.2.254)
221.81.3.*(221.81.3.0 - 221.81.3.254)
221.81.4.*(221.81.4.0 - 221.81.4.254)
221.81.5.*(221.81.5.0 - 221.81.5.254)
221.81.6.*(221.81.6.0 - 221.81.6.254)
221.81.7.*(221.81.7.0 - 221.81.7.254)
221.81.8.*(221.81.8.0 - 221.81.8.254)
221.81.9.*(221.81.9.0 - 221.81.9.254)
221.81.10.*(221.81.10.0 - 221.81.10.254)
221.81.11.*(221.81.11.0 - 221.81.11.254)
221.81.12.*(221.81.12.0 - 221.81.12.254)
221.81.13.*(221.81.13.0 - 221.81.13.254)
221.81.14.*(221.81.14.0 - 221.81.14.254)
221.81.15.*(221.81.15.0 - 221.81.15.254)
221.81.16.*(221.81.16.0 - 221.81.16.254)
221.81.17.*(221.81.17.0 - 221.81.17.254)
221.81.18.*(221.81.18.0 - 221.81.18.254)
221.81.19.*(221.81.19.0 - 221.81.19.254)
221.81.20.*(221.81.20.0 - 221.81.20.254)
221.81.21.*(221.81.21.0 - 221.81.21.254)
221.81.22.*(221.81.22.0 - 221.81.22.254)
221.81.23.*(221.81.23.0 - 221.81.23.254)
221.81.24.*(221.81.24.0 - 221.81.24.254)
221.81.25.*(221.81.25.0 - 221.81.25.254)
221.81.26.*(221.81.26.0 - 221.81.26.254)
221.81.27.*(221.81.27.0 - 221.81.27.254)
221.81.28.*(221.81.28.0 - 221.81.28.254)
221.81.29.*(221.81.29.0 - 221.81.29.254)
221.81.30.*(221.81.30.0 - 221.81.30.254)
221.81.31.*(221.81.31.0 - 221.81.31.254)
221.81.32.*(221.81.32.0 - 221.81.32.254)
221.81.33.*(221.81.33.0 - 221.81.33.254)
221.81.34.*(221.81.34.0 - 221.81.34.254)
221.81.35.*(221.81.35.0 - 221.81.35.254)
221.81.36.*(221.81.36.0 - 221.81.36.254)
221.81.37.*(221.81.37.0 - 221.81.37.254)
221.81.38.*(221.81.38.0 - 221.81.38.254)
221.81.39.*(221.81.39.0 - 221.81.39.254)
221.81.40.*(221.81.40.0 - 221.81.40.254)
221.81.41.*(221.81.41.0 - 221.81.41.254)
221.81.42.*(221.81.42.0 - 221.81.42.254)
221.81.43.*(221.81.43.0 - 221.81.43.254)
221.81.44.*(221.81.44.0 - 221.81.44.254)
221.81.45.*(221.81.45.0 - 221.81.45.254)
221.81.46.*(221.81.46.0 - 221.81.46.254)
221.81.47.*(221.81.47.0 - 221.81.47.254)
221.81.48.*(221.81.48.0 - 221.81.48.254)
221.81.49.*(221.81.49.0 - 221.81.49.254)
221.81.50.*(221.81.50.0 - 221.81.50.254)
221.81.51.*(221.81.51.0 - 221.81.51.254)
221.81.52.*(221.81.52.0 - 221.81.52.254)
221.81.53.*(221.81.53.0 - 221.81.53.254)
221.81.54.*(221.81.54.0 - 221.81.54.254)
221.81.55.*(221.81.55.0 - 221.81.55.254)
221.81.56.*(221.81.56.0 - 221.81.56.254)
221.81.57.*(221.81.57.0 - 221.81.57.254)
221.81.58.*(221.81.58.0 - 221.81.58.254)
221.81.59.*(221.81.59.0 - 221.81.59.254)
221.81.60.*(221.81.60.0 - 221.81.60.254)
221.81.61.*(221.81.61.0 - 221.81.61.254)
221.81.62.*(221.81.62.0 - 221.81.62.254)
221.81.63.*(221.81.63.0 - 221.81.63.254)
221.81.64.*(221.81.64.0 - 221.81.64.254)
221.81.65.*(221.81.65.0 - 221.81.65.254)
221.81.66.*(221.81.66.0 - 221.81.66.254)
221.81.67.*(221.81.67.0 - 221.81.67.254)
221.81.68.*(221.81.68.0 - 221.81.68.254)
221.81.69.*(221.81.69.0 - 221.81.69.254)
221.81.70.*(221.81.70.0 - 221.81.70.254)
221.81.71.*(221.81.71.0 - 221.81.71.254)
221.81.72.*(221.81.72.0 - 221.81.72.254)
221.81.73.*(221.81.73.0 - 221.81.73.254)
221.81.74.*(221.81.74.0 - 221.81.74.254)
221.81.75.*(221.81.75.0 - 221.81.75.254)
221.81.76.*(221.81.76.0 - 221.81.76.254)
221.81.77.*(221.81.77.0 - 221.81.77.254)
221.81.78.*(221.81.78.0 - 221.81.78.254)
221.81.79.*(221.81.79.0 - 221.81.79.254)
221.81.80.*(221.81.80.0 - 221.81.80.254)
221.81.81.*(221.81.81.0 - 221.81.81.254)
221.81.82.*(221.81.82.0 - 221.81.82.254)
221.81.83.*(221.81.83.0 - 221.81.83.254)
221.81.84.*(221.81.84.0 - 221.81.84.254)
221.81.85.*(221.81.85.0 - 221.81.85.254)
221.81.86.*(221.81.86.0 - 221.81.86.254)
221.81.87.*(221.81.87.0 - 221.81.87.254)
221.81.88.*(221.81.88.0 - 221.81.88.254)
221.81.89.*(221.81.89.0 - 221.81.89.254)
221.81.90.*(221.81.90.0 - 221.81.90.254)
221.81.91.*(221.81.91.0 - 221.81.91.254)
221.81.92.*(221.81.92.0 - 221.81.92.254)
221.81.93.*(221.81.93.0 - 221.81.93.254)
221.81.94.*(221.81.94.0 - 221.81.94.254)
221.81.95.*(221.81.95.0 - 221.81.95.254)
221.81.96.*(221.81.96.0 - 221.81.96.254)
221.81.97.*(221.81.97.0 - 221.81.97.254)
221.81.98.*(221.81.98.0 - 221.81.98.254)
221.81.99.*(221.81.99.0 - 221.81.99.254)
221.81.100.*(221.81.100.0 - 221.81.100.254)
221.81.101.*(221.81.101.0 - 221.81.101.254)
221.81.102.*(221.81.102.0 - 221.81.102.254)
221.81.103.*(221.81.103.0 - 221.81.103.254)
221.81.104.*(221.81.104.0 - 221.81.104.254)
221.81.105.*(221.81.105.0 - 221.81.105.254)
221.81.106.*(221.81.106.0 - 221.81.106.254)
221.81.107.*(221.81.107.0 - 221.81.107.254)
221.81.108.*(221.81.108.0 - 221.81.108.254)
221.81.109.*(221.81.109.0 - 221.81.109.254)
221.81.110.*(221.81.110.0 - 221.81.110.254)
221.81.111.*(221.81.111.0 - 221.81.111.254)
221.81.112.*(221.81.112.0 - 221.81.112.254)
221.81.113.*(221.81.113.0 - 221.81.113.254)
221.81.114.*(221.81.114.0 - 221.81.114.254)
221.81.115.*(221.81.115.0 - 221.81.115.254)
221.81.116.*(221.81.116.0 - 221.81.116.254)
221.81.117.*(221.81.117.0 - 221.81.117.254)
221.81.118.*(221.81.118.0 - 221.81.118.254)
221.81.119.*(221.81.119.0 - 221.81.119.254)
221.81.120.*(221.81.120.0 - 221.81.120.254)
221.81.121.*(221.81.121.0 - 221.81.121.254)
221.81.122.*(221.81.122.0 - 221.81.122.254)
221.81.123.*(221.81.123.0 - 221.81.123.254)
221.81.124.*(221.81.124.0 - 221.81.124.254)
221.81.125.*(221.81.125.0 - 221.81.125.254)
221.81.126.*(221.81.126.0 - 221.81.126.254)
221.81.127.*(221.81.127.0 - 221.81.127.254)
221.81.128.*(221.81.128.0 - 221.81.128.254)
221.81.129.*(221.81.129.0 - 221.81.129.254)
221.81.130.*(221.81.130.0 - 221.81.130.254)
221.81.131.*(221.81.131.0 - 221.81.131.254)
221.81.132.*(221.81.132.0 - 221.81.132.254)
221.81.133.*(221.81.133.0 - 221.81.133.254)
221.81.134.*(221.81.134.0 - 221.81.134.254)
221.81.135.*(221.81.135.0 - 221.81.135.254)
221.81.136.*(221.81.136.0 - 221.81.136.254)
221.81.137.*(221.81.137.0 - 221.81.137.254)
221.81.138.*(221.81.138.0 - 221.81.138.254)
221.81.139.*(221.81.139.0 - 221.81.139.254)
221.81.140.*(221.81.140.0 - 221.81.140.254)
221.81.141.*(221.81.141.0 - 221.81.141.254)
221.81.142.*(221.81.142.0 - 221.81.142.254)
221.81.143.*(221.81.143.0 - 221.81.143.254)
221.81.144.*(221.81.144.0 - 221.81.144.254)
221.81.145.*(221.81.145.0 - 221.81.145.254)
221.81.146.*(221.81.146.0 - 221.81.146.254)
221.81.147.*(221.81.147.0 - 221.81.147.254)
221.81.148.*(221.81.148.0 - 221.81.148.254)
221.81.149.*(221.81.149.0 - 221.81.149.254)
221.81.150.*(221.81.150.0 - 221.81.150.254)
221.81.151.*(221.81.151.0 - 221.81.151.254)
221.81.152.*(221.81.152.0 - 221.81.152.254)
221.81.153.*(221.81.153.0 - 221.81.153.254)
221.81.154.*(221.81.154.0 - 221.81.154.254)
221.81.155.*(221.81.155.0 - 221.81.155.254)
221.81.156.*(221.81.156.0 - 221.81.156.254)
221.81.157.*(221.81.157.0 - 221.81.157.254)
221.81.158.*(221.81.158.0 - 221.81.158.254)
221.81.159.*(221.81.159.0 - 221.81.159.254)
221.81.160.*(221.81.160.0 - 221.81.160.254)
221.81.161.*(221.81.161.0 - 221.81.161.254)
221.81.162.*(221.81.162.0 - 221.81.162.254)
221.81.163.*(221.81.163.0 - 221.81.163.254)
221.81.164.*(221.81.164.0 - 221.81.164.254)
221.81.165.*(221.81.165.0 - 221.81.165.254)
221.81.166.*(221.81.166.0 - 221.81.166.254)
221.81.167.*(221.81.167.0 - 221.81.167.254)
221.81.168.*(221.81.168.0 - 221.81.168.254)
221.81.169.*(221.81.169.0 - 221.81.169.254)
221.81.170.*(221.81.170.0 - 221.81.170.254)
221.81.171.*(221.81.171.0 - 221.81.171.254)
221.81.172.*(221.81.172.0 - 221.81.172.254)
221.81.173.*(221.81.173.0 - 221.81.173.254)
221.81.174.*(221.81.174.0 - 221.81.174.254)
221.81.175.*(221.81.175.0 - 221.81.175.254)
221.81.176.*(221.81.176.0 - 221.81.176.254)
221.81.177.*(221.81.177.0 - 221.81.177.254)
221.81.178.*(221.81.178.0 - 221.81.178.254)
221.81.179.*(221.81.179.0 - 221.81.179.254)
221.81.180.*(221.81.180.0 - 221.81.180.254)
221.81.181.*(221.81.181.0 - 221.81.181.254)
221.81.182.*(221.81.182.0 - 221.81.182.254)
221.81.183.*(221.81.183.0 - 221.81.183.254)
221.81.184.*(221.81.184.0 - 221.81.184.254)
221.81.185.*(221.81.185.0 - 221.81.185.254)
221.81.186.*(221.81.186.0 - 221.81.186.254)
221.81.187.*(221.81.187.0 - 221.81.187.254)
221.81.188.*(221.81.188.0 - 221.81.188.254)
221.81.189.*(221.81.189.0 - 221.81.189.254)
221.81.190.*(221.81.190.0 - 221.81.190.254)
221.81.191.*(221.81.191.0 - 221.81.191.254)
221.81.192.*(221.81.192.0 - 221.81.192.254)
221.81.193.*(221.81.193.0 - 221.81.193.254)
221.81.194.*(221.81.194.0 - 221.81.194.254)
221.81.195.*(221.81.195.0 - 221.81.195.254)
221.81.196.*(221.81.196.0 - 221.81.196.254)
221.81.197.*(221.81.197.0 - 221.81.197.254)
221.81.198.*(221.81.198.0 - 221.81.198.254)
221.81.199.*(221.81.199.0 - 221.81.199.254)
221.81.200.*(221.81.200.0 - 221.81.200.254)
221.81.201.*(221.81.201.0 - 221.81.201.254)
221.81.202.*(221.81.202.0 - 221.81.202.254)
221.81.203.*(221.81.203.0 - 221.81.203.254)
221.81.204.*(221.81.204.0 - 221.81.204.254)
221.81.205.*(221.81.205.0 - 221.81.205.254)
221.81.206.*(221.81.206.0 - 221.81.206.254)
221.81.207.*(221.81.207.0 - 221.81.207.254)
221.81.208.*(221.81.208.0 - 221.81.208.254)
221.81.209.*(221.81.209.0 - 221.81.209.254)
221.81.210.*(221.81.210.0 - 221.81.210.254)
221.81.211.*(221.81.211.0 - 221.81.211.254)
221.81.212.*(221.81.212.0 - 221.81.212.254)
221.81.213.*(221.81.213.0 - 221.81.213.254)
221.81.214.*(221.81.214.0 - 221.81.214.254)
221.81.215.*(221.81.215.0 - 221.81.215.254)
221.81.216.*(221.81.216.0 - 221.81.216.254)
221.81.217.*(221.81.217.0 - 221.81.217.254)
221.81.218.*(221.81.218.0 - 221.81.218.254)
221.81.219.*(221.81.219.0 - 221.81.219.254)
221.81.220.*(221.81.220.0 - 221.81.220.254)
221.81.221.*(221.81.221.0 - 221.81.221.254)
221.81.222.*(221.81.222.0 - 221.81.222.254)
221.81.223.*(221.81.223.0 - 221.81.223.254)
221.81.224.*(221.81.224.0 - 221.81.224.254)
221.81.225.*(221.81.225.0 - 221.81.225.254)
221.81.226.*(221.81.226.0 - 221.81.226.254)
221.81.227.*(221.81.227.0 - 221.81.227.254)
221.81.228.*(221.81.228.0 - 221.81.228.254)
221.81.229.*(221.81.229.0 - 221.81.229.254)
221.81.230.*(221.81.230.0 - 221.81.230.254)
221.81.231.*(221.81.231.0 - 221.81.231.254)
221.81.232.*(221.81.232.0 - 221.81.232.254)
221.81.233.*(221.81.233.0 - 221.81.233.254)
221.81.234.*(221.81.234.0 - 221.81.234.254)
221.81.235.*(221.81.235.0 - 221.81.235.254)
221.81.236.*(221.81.236.0 - 221.81.236.254)
221.81.237.*(221.81.237.0 - 221.81.237.254)
221.81.238.*(221.81.238.0 - 221.81.238.254)
221.81.239.*(221.81.239.0 - 221.81.239.254)
221.81.240.*(221.81.240.0 - 221.81.240.254)
221.81.241.*(221.81.241.0 - 221.81.241.254)
221.81.242.*(221.81.242.0 - 221.81.242.254)
221.81.243.*(221.81.243.0 - 221.81.243.254)
221.81.244.*(221.81.244.0 - 221.81.244.254)
221.81.245.*(221.81.245.0 - 221.81.245.254)
221.81.246.*(221.81.246.0 - 221.81.246.254)
221.81.247.*(221.81.247.0 - 221.81.247.254)
221.81.248.*(221.81.248.0 - 221.81.248.254)
221.81.249.*(221.81.249.0 - 221.81.249.254)
221.81.250.*(221.81.250.0 - 221.81.250.254)
221.81.251.*(221.81.251.0 - 221.81.251.254)
221.81.252.*(221.81.252.0 - 221.81.252.254)
221.81.253.*(221.81.253.0 - 221.81.253.254)
221.81.254.*(221.81.254.0 - 221.81.254.254)
221.81.255.*(221.81.255.0 - 221.81.255.254)

🔝 返回顶部

221.81开头的IP是哪里的IP,IP地址列表: 221.81.. (221.81.0.* - 221.81.255.*)

内容:

1. 第一个IP地址例子

2. C类IP地址列表

3. 最后一个IP地址例子

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