121开头的IP是哪里的IP,IP地址列表: 121.*.*.* (121.0.*.* - 121.255.*.*)

这是第一个字节为121，第二个字节在0 - 255之间，第三、第四字节可变动（下面为星号）的IP地址列表，表示为121.*.*.* (121.0.0.0 - 121.255.255.255)。

这个IP地址列表中包含256 * 256 * 256 = 16,777,216个IP地址，我们以其中一个IP地址121.1.1.1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。

内容:

• 1. 第一个IP地址例子
• 2. A类IP地址列表
• 3. 最后一个IP地址例子

121.1.1.1是一个公开IP地址，使用者位于菲律宾 国家首都地区 Makati，其用途是固定电话互联网服务提供商，类型是宽带/电缆/光纤。更多详情： 121.1.1.1。

A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，第一段号码（字节1）为网络号码，剩下的后三段号码（字节2.字节3.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，A类IP地址就由1字节的网络地址和3字节主机地址组成，网络地址的最高位必须是'0'。

A类IP地址范围：1.0.0.0 ~ 127.255.255.255，可用IP地址范围：1.0.0.1 ~ 127.255.255.254。

A类IP地址中网络的标识长度为7位，主机标识的长度为24位，A类网络地址数量较少（2 ^ 7 - 2 = 126个），可以用于容纳1600多万计算机的大型网络（2 ^ 24 - 2 = 16777214个）。

如果您需要了解A类IP段更详细的IP地址信息，请点击A类IP地址列表中的标题链接。

• 121.0.*.*(121.0.0.0 - 121.0.255.255)
• 121.1.*.*(121.1.0.0 - 121.1.255.255)
• 121.2.*.*(121.2.0.0 - 121.2.255.255)
• 121.3.*.*(121.3.0.0 - 121.3.255.255)
• 121.4.*.*(121.4.0.0 - 121.4.255.255)
• 121.5.*.*(121.5.0.0 - 121.5.255.255)
• 121.6.*.*(121.6.0.0 - 121.6.255.255)
• 121.7.*.*(121.7.0.0 - 121.7.255.255)
• 121.8.*.*(121.8.0.0 - 121.8.255.255)
• 121.9.*.*(121.9.0.0 - 121.9.255.255)
• 121.10.*.*(121.10.0.0 - 121.10.255.255)
• 121.11.*.*(121.11.0.0 - 121.11.255.255)
• 121.12.*.*(121.12.0.0 - 121.12.255.255)
• 121.13.*.*(121.13.0.0 - 121.13.255.255)
• 121.14.*.*(121.14.0.0 - 121.14.255.255)
• 121.15.*.*(121.15.0.0 - 121.15.255.255)
• 121.16.*.*(121.16.0.0 - 121.16.255.255)
• 121.17.*.*(121.17.0.0 - 121.17.255.255)
• 121.18.*.*(121.18.0.0 - 121.18.255.255)
• 121.19.*.*(121.19.0.0 - 121.19.255.255)
• 121.20.*.*(121.20.0.0 - 121.20.255.255)
• 121.21.*.*(121.21.0.0 - 121.21.255.255)
• 121.22.*.*(121.22.0.0 - 121.22.255.255)
• 121.23.*.*(121.23.0.0 - 121.23.255.255)
• 121.24.*.*(121.24.0.0 - 121.24.255.255)
• 121.25.*.*(121.25.0.0 - 121.25.255.255)
• 121.26.*.*(121.26.0.0 - 121.26.255.255)
• 121.27.*.*(121.27.0.0 - 121.27.255.255)
• 121.28.*.*(121.28.0.0 - 121.28.255.255)
• 121.29.*.*(121.29.0.0 - 121.29.255.255)
• 121.30.*.*(121.30.0.0 - 121.30.255.255)
• 121.31.*.*(121.31.0.0 - 121.31.255.255)
• 121.32.*.*(121.32.0.0 - 121.32.255.255)
• 121.33.*.*(121.33.0.0 - 121.33.255.255)
• 121.34.*.*(121.34.0.0 - 121.34.255.255)
• 121.35.*.*(121.35.0.0 - 121.35.255.255)
• 121.36.*.*(121.36.0.0 - 121.36.255.255)
• 121.37.*.*(121.37.0.0 - 121.37.255.255)
• 121.38.*.*(121.38.0.0 - 121.38.255.255)
• 121.39.*.*(121.39.0.0 - 121.39.255.255)
• 121.40.*.*(121.40.0.0 - 121.40.255.255)
• 121.41.*.*(121.41.0.0 - 121.41.255.255)
• 121.42.*.*(121.42.0.0 - 121.42.255.255)
• 121.43.*.*(121.43.0.0 - 121.43.255.255)
• 121.44.*.*(121.44.0.0 - 121.44.255.255)
• 121.45.*.*(121.45.0.0 - 121.45.255.255)
• 121.46.*.*(121.46.0.0 - 121.46.255.255)
• 121.47.*.*(121.47.0.0 - 121.47.255.255)
• 121.48.*.*(121.48.0.0 - 121.48.255.255)
• 121.49.*.*(121.49.0.0 - 121.49.255.255)
• 121.50.*.*(121.50.0.0 - 121.50.255.255)
• 121.51.*.*(121.51.0.0 - 121.51.255.255)
• 121.52.*.*(121.52.0.0 - 121.52.255.255)
• 121.53.*.*(121.53.0.0 - 121.53.255.255)
• 121.54.*.*(121.54.0.0 - 121.54.255.255)
• 121.55.*.*(121.55.0.0 - 121.55.255.255)
• 121.56.*.*(121.56.0.0 - 121.56.255.255)
• 121.57.*.*(121.57.0.0 - 121.57.255.255)
• 121.58.*.*(121.58.0.0 - 121.58.255.255)
• 121.59.*.*(121.59.0.0 - 121.59.255.255)
• 121.60.*.*(121.60.0.0 - 121.60.255.255)
• 121.61.*.*(121.61.0.0 - 121.61.255.255)
• 121.62.*.*(121.62.0.0 - 121.62.255.255)
• 121.63.*.*(121.63.0.0 - 121.63.255.255)
• 121.64.*.*(121.64.0.0 - 121.64.255.255)
• 121.65.*.*(121.65.0.0 - 121.65.255.255)
• 121.66.*.*(121.66.0.0 - 121.66.255.255)
• 121.67.*.*(121.67.0.0 - 121.67.255.255)
• 121.68.*.*(121.68.0.0 - 121.68.255.255)
• 121.69.*.*(121.69.0.0 - 121.69.255.255)
• 121.70.*.*(121.70.0.0 - 121.70.255.255)
• 121.71.*.*(121.71.0.0 - 121.71.255.255)
• 121.72.*.*(121.72.0.0 - 121.72.255.255)
• 121.73.*.*(121.73.0.0 - 121.73.255.255)
• 121.74.*.*(121.74.0.0 - 121.74.255.255)
• 121.75.*.*(121.75.0.0 - 121.75.255.255)
• 121.76.*.*(121.76.0.0 - 121.76.255.255)
• 121.77.*.*(121.77.0.0 - 121.77.255.255)
• 121.78.*.*(121.78.0.0 - 121.78.255.255)
• 121.79.*.*(121.79.0.0 - 121.79.255.255)
• 121.80.*.*(121.80.0.0 - 121.80.255.255)
• 121.81.*.*(121.81.0.0 - 121.81.255.255)
• 121.82.*.*(121.82.0.0 - 121.82.255.255)
• 121.83.*.*(121.83.0.0 - 121.83.255.255)
• 121.84.*.*(121.84.0.0 - 121.84.255.255)
• 121.85.*.*(121.85.0.0 - 121.85.255.255)
• 121.86.*.*(121.86.0.0 - 121.86.255.255)
• 121.87.*.*(121.87.0.0 - 121.87.255.255)
• 121.88.*.*(121.88.0.0 - 121.88.255.255)
• 121.89.*.*(121.89.0.0 - 121.89.255.255)
• 121.90.*.*(121.90.0.0 - 121.90.255.255)
• 121.91.*.*(121.91.0.0 - 121.91.255.255)
• 121.92.*.*(121.92.0.0 - 121.92.255.255)
• 121.93.*.*(121.93.0.0 - 121.93.255.255)
• 121.94.*.*(121.94.0.0 - 121.94.255.255)
• 121.95.*.*(121.95.0.0 - 121.95.255.255)
• 121.96.*.*(121.96.0.0 - 121.96.255.255)
• 121.97.*.*(121.97.0.0 - 121.97.255.255)
• 121.98.*.*(121.98.0.0 - 121.98.255.255)
• 121.99.*.*(121.99.0.0 - 121.99.255.255)
• 121.100.*.*(121.100.0.0 - 121.100.255.255)
• 121.101.*.*(121.101.0.0 - 121.101.255.255)
• 121.102.*.*(121.102.0.0 - 121.102.255.255)
• 121.103.*.*(121.103.0.0 - 121.103.255.255)
• 121.104.*.*(121.104.0.0 - 121.104.255.255)
• 121.105.*.*(121.105.0.0 - 121.105.255.255)
• 121.106.*.*(121.106.0.0 - 121.106.255.255)
• 121.107.*.*(121.107.0.0 - 121.107.255.255)
• 121.108.*.*(121.108.0.0 - 121.108.255.255)
• 121.109.*.*(121.109.0.0 - 121.109.255.255)
• 121.110.*.*(121.110.0.0 - 121.110.255.255)
• 121.111.*.*(121.111.0.0 - 121.111.255.255)
• 121.112.*.*(121.112.0.0 - 121.112.255.255)
• 121.113.*.*(121.113.0.0 - 121.113.255.255)
• 121.114.*.*(121.114.0.0 - 121.114.255.255)
• 121.115.*.*(121.115.0.0 - 121.115.255.255)
• 121.116.*.*(121.116.0.0 - 121.116.255.255)
• 121.117.*.*(121.117.0.0 - 121.117.255.255)
• 121.118.*.*(121.118.0.0 - 121.118.255.255)
• 121.119.*.*(121.119.0.0 - 121.119.255.255)
• 121.120.*.*(121.120.0.0 - 121.120.255.255)
• 121.121.*.*(121.121.0.0 - 121.121.255.255)
• 121.122.*.*(121.122.0.0 - 121.122.255.255)
• 121.123.*.*(121.123.0.0 - 121.123.255.255)
• 121.124.*.*(121.124.0.0 - 121.124.255.255)
• 121.125.*.*(121.125.0.0 - 121.125.255.255)
• 121.126.*.*(121.126.0.0 - 121.126.255.255)
• 121.127.*.*(121.127.0.0 - 121.127.255.255)
• 121.128.*.*(121.128.0.0 - 121.128.255.255)
• 121.129.*.*(121.129.0.0 - 121.129.255.255)
• 121.130.*.*(121.130.0.0 - 121.130.255.255)
• 121.131.*.*(121.131.0.0 - 121.131.255.255)
• 121.132.*.*(121.132.0.0 - 121.132.255.255)
• 121.133.*.*(121.133.0.0 - 121.133.255.255)
• 121.134.*.*(121.134.0.0 - 121.134.255.255)
• 121.135.*.*(121.135.0.0 - 121.135.255.255)
• 121.136.*.*(121.136.0.0 - 121.136.255.255)
• 121.137.*.*(121.137.0.0 - 121.137.255.255)
• 121.138.*.*(121.138.0.0 - 121.138.255.255)
• 121.139.*.*(121.139.0.0 - 121.139.255.255)
• 121.140.*.*(121.140.0.0 - 121.140.255.255)
• 121.141.*.*(121.141.0.0 - 121.141.255.255)
• 121.142.*.*(121.142.0.0 - 121.142.255.255)
• 121.143.*.*(121.143.0.0 - 121.143.255.255)
• 121.144.*.*(121.144.0.0 - 121.144.255.255)
• 121.145.*.*(121.145.0.0 - 121.145.255.255)
• 121.146.*.*(121.146.0.0 - 121.146.255.255)
• 121.147.*.*(121.147.0.0 - 121.147.255.255)
• 121.148.*.*(121.148.0.0 - 121.148.255.255)
• 121.149.*.*(121.149.0.0 - 121.149.255.255)
• 121.150.*.*(121.150.0.0 - 121.150.255.255)
• 121.151.*.*(121.151.0.0 - 121.151.255.255)
• 121.152.*.*(121.152.0.0 - 121.152.255.255)
• 121.153.*.*(121.153.0.0 - 121.153.255.255)
• 121.154.*.*(121.154.0.0 - 121.154.255.255)
• 121.155.*.*(121.155.0.0 - 121.155.255.255)
• 121.156.*.*(121.156.0.0 - 121.156.255.255)
• 121.157.*.*(121.157.0.0 - 121.157.255.255)
• 121.158.*.*(121.158.0.0 - 121.158.255.255)
• 121.159.*.*(121.159.0.0 - 121.159.255.255)
• 121.160.*.*(121.160.0.0 - 121.160.255.255)
• 121.161.*.*(121.161.0.0 - 121.161.255.255)
• 121.162.*.*(121.162.0.0 - 121.162.255.255)
• 121.163.*.*(121.163.0.0 - 121.163.255.255)
• 121.164.*.*(121.164.0.0 - 121.164.255.255)
• 121.165.*.*(121.165.0.0 - 121.165.255.255)
• 121.166.*.*(121.166.0.0 - 121.166.255.255)
• 121.167.*.*(121.167.0.0 - 121.167.255.255)
• 121.168.*.*(121.168.0.0 - 121.168.255.255)
• 121.169.*.*(121.169.0.0 - 121.169.255.255)
• 121.170.*.*(121.170.0.0 - 121.170.255.255)
• 121.171.*.*(121.171.0.0 - 121.171.255.255)
• 121.172.*.*(121.172.0.0 - 121.172.255.255)
• 121.173.*.*(121.173.0.0 - 121.173.255.255)
• 121.174.*.*(121.174.0.0 - 121.174.255.255)
• 121.175.*.*(121.175.0.0 - 121.175.255.255)
• 121.176.*.*(121.176.0.0 - 121.176.255.255)
• 121.177.*.*(121.177.0.0 - 121.177.255.255)
• 121.178.*.*(121.178.0.0 - 121.178.255.255)
• 121.179.*.*(121.179.0.0 - 121.179.255.255)
• 121.180.*.*(121.180.0.0 - 121.180.255.255)
• 121.181.*.*(121.181.0.0 - 121.181.255.255)
• 121.182.*.*(121.182.0.0 - 121.182.255.255)
• 121.183.*.*(121.183.0.0 - 121.183.255.255)
• 121.184.*.*(121.184.0.0 - 121.184.255.255)
• 121.185.*.*(121.185.0.0 - 121.185.255.255)
• 121.186.*.*(121.186.0.0 - 121.186.255.255)
• 121.187.*.*(121.187.0.0 - 121.187.255.255)
• 121.188.*.*(121.188.0.0 - 121.188.255.255)
• 121.189.*.*(121.189.0.0 - 121.189.255.255)
• 121.190.*.*(121.190.0.0 - 121.190.255.255)
• 121.191.*.*(121.191.0.0 - 121.191.255.255)
• 121.192.*.*(121.192.0.0 - 121.192.255.255)
• 121.193.*.*(121.193.0.0 - 121.193.255.255)
• 121.194.*.*(121.194.0.0 - 121.194.255.255)
• 121.195.*.*(121.195.0.0 - 121.195.255.255)
• 121.196.*.*(121.196.0.0 - 121.196.255.255)
• 121.197.*.*(121.197.0.0 - 121.197.255.255)
• 121.198.*.*(121.198.0.0 - 121.198.255.255)
• 121.199.*.*(121.199.0.0 - 121.199.255.255)
• 121.200.*.*(121.200.0.0 - 121.200.255.255)
• 121.201.*.*(121.201.0.0 - 121.201.255.255)
• 121.202.*.*(121.202.0.0 - 121.202.255.255)
• 121.203.*.*(121.203.0.0 - 121.203.255.255)
• 121.204.*.*(121.204.0.0 - 121.204.255.255)
• 121.205.*.*(121.205.0.0 - 121.205.255.255)
• 121.206.*.*(121.206.0.0 - 121.206.255.255)
• 121.207.*.*(121.207.0.0 - 121.207.255.255)
• 121.208.*.*(121.208.0.0 - 121.208.255.255)
• 121.209.*.*(121.209.0.0 - 121.209.255.255)
• 121.210.*.*(121.210.0.0 - 121.210.255.255)
• 121.211.*.*(121.211.0.0 - 121.211.255.255)
• 121.212.*.*(121.212.0.0 - 121.212.255.255)
• 121.213.*.*(121.213.0.0 - 121.213.255.255)
• 121.214.*.*(121.214.0.0 - 121.214.255.255)
• 121.215.*.*(121.215.0.0 - 121.215.255.255)
• 121.216.*.*(121.216.0.0 - 121.216.255.255)
• 121.217.*.*(121.217.0.0 - 121.217.255.255)
• 121.218.*.*(121.218.0.0 - 121.218.255.255)
• 121.219.*.*(121.219.0.0 - 121.219.255.255)
• 121.220.*.*(121.220.0.0 - 121.220.255.255)
• 121.221.*.*(121.221.0.0 - 121.221.255.255)
• 121.222.*.*(121.222.0.0 - 121.222.255.255)
• 121.223.*.*(121.223.0.0 - 121.223.255.255)
• 121.224.*.*(121.224.0.0 - 121.224.255.255)
• 121.225.*.*(121.225.0.0 - 121.225.255.255)
• 121.226.*.*(121.226.0.0 - 121.226.255.255)
• 121.227.*.*(121.227.0.0 - 121.227.255.255)
• 121.228.*.*(121.228.0.0 - 121.228.255.255)
• 121.229.*.*(121.229.0.0 - 121.229.255.255)
• 121.230.*.*(121.230.0.0 - 121.230.255.255)
• 121.231.*.*(121.231.0.0 - 121.231.255.255)
• 121.232.*.*(121.232.0.0 - 121.232.255.255)
• 121.233.*.*(121.233.0.0 - 121.233.255.255)
• 121.234.*.*(121.234.0.0 - 121.234.255.255)
• 121.235.*.*(121.235.0.0 - 121.235.255.255)
• 121.236.*.*(121.236.0.0 - 121.236.255.255)
• 121.237.*.*(121.237.0.0 - 121.237.255.255)
• 121.238.*.*(121.238.0.0 - 121.238.255.255)
• 121.239.*.*(121.239.0.0 - 121.239.255.255)
• 121.240.*.*(121.240.0.0 - 121.240.255.255)
• 121.241.*.*(121.241.0.0 - 121.241.255.255)
• 121.242.*.*(121.242.0.0 - 121.242.255.255)
• 121.243.*.*(121.243.0.0 - 121.243.255.255)
• 121.244.*.*(121.244.0.0 - 121.244.255.255)
• 121.245.*.*(121.245.0.0 - 121.245.255.255)
• 121.246.*.*(121.246.0.0 - 121.246.255.255)
• 121.247.*.*(121.247.0.0 - 121.247.255.255)
• 121.248.*.*(121.248.0.0 - 121.248.255.255)
• 121.249.*.*(121.249.0.0 - 121.249.255.255)
• 121.250.*.*(121.250.0.0 - 121.250.255.255)
• 121.251.*.*(121.251.0.0 - 121.251.255.255)
• 121.252.*.*(121.252.0.0 - 121.252.255.255)
• 121.253.*.*(121.253.0.0 - 121.253.255.255)
• 121.254.*.*(121.254.0.0 - 121.254.255.255)
• 121.255.*.*(121.255.0.0 - 121.255.255.255)

121.255.255.255是一个公开IP地址，使用者位于中国 安徽 合肥，其用途是大学/学院/学校，类型是公司/T1。更多详情： 121.255.255.255。