A类ip地址怎么写( 二 ) _地址

第4位为0意味着D类地址的最大值为128+64+32+8+4+2+1为239，因此D类地址空间的范围从224.0.0.0到239. 255. 255.254 。5. E 类地址 E 类地址保留作研究之用。
因此Internet上没有可用的E类地址。E类地址的前4位恒为1，因此有效的地址范围从240.0.0.0 至255.255.255.255 。
总的来说，ip地址分类由第一个八位组的值来确定。任何一个0到127 间的网络地址均是一个A类地址。
任何一个128到191间的网络地址是一个B类地址。任何一个192到223 间的网络地址是一个C类地址。
任何一个第一个八位组在224到239 间的网络地址是一个组播地址即D类地址。E类保留。
IP和子网掩码我们都知道，IP是由四段数字组成，在此，我们先来了解一下3类常用的IP A类IP段 0.0.0.0 到127.255.255.255 B类IP段 128.0.0.0 到191.255.255.255 C类IP段 192.0.0.0 到223.255.255.255 XP默认分配的子网掩码每段只有255或0 A类的默认子网掩码 255.0.0.0 一个子网最多可以容纳1677万多台电脑 B类的默认子网掩码 255.255.0.0 一个子网最多可以容纳6万台电脑 C类的默认子网掩码 255.255.255.0 一个子网最多可以容纳254台电脑我以前认为，要想把一些电脑搞在同一网段，只要IP的前三段一样就可以了，今天，我才知道我错了。如果照我这说的话，一个子网就只能容纳254台电脑？真是有点笑话。
我们来说详细看看吧。要想在同一网段，只要网络标识相同就可以了，那要怎么看网络标识呢？首先要做的是把每段的IP转换为二进制。
（有人说，我不会转换耶。
2.A类IP地址的表示范围所谓A类IP地址，即：一个A类IP地址由1字节（每个字节是8位）的网络地址和3个字节主机地址组成，网络地址的最高位必须是“0”，即第一段数字范围为1~127 。
每个A类地址可连接16387064台主机，Internet有126个A类地址。中国的 A类IP地址列表： 58.14.0.0~58.63.255.255 58.64.128.0~58.64.255.255 58.66.0.0~58.67.255.255 58.68.128.0~58.68.255.255 58.82.0.0~58.82.142.255 58.82.144.0~58.83.255.255 58.86.0.0~58.86.255.255 58.87.64.0~58.87.127.255 58.99.0.0~58.101.255.255 58.114.0.0~58.119.255.255 58.128.0.0~58.135.255.255 58.144.0.0~58.144.255.255 58.152.0.0~58.155.255.255 58.176.0.0~58.177.255.255 58.192.0.0~58.223.255.255 58.240.0.0~58.255.255.255 59.32.0.0~59.83.255.255 59.104.0.0~59.105.255.255 59.107.0.0~59.127.255.255 59.148.0.0~59.149.255.255 59.151.0.0~59.151.127.255 59.152.192.0~59.152.223.255 59.155.0.0~59.155.255.255 59.172.0.0~59.173.255.255 59.188.0.0~59.188.255.255 59.191.0.0~59.191.127.255 59.192.0.0~60.31.255.255 60.55.0.0~60.191.255.255 60.194.0.0~60.195.255.255 60.198.0.0~60.223.255.255 60.232.0.0~60.233.255.255 60.235.0.0~60.235.255.255 60.244.0.0~60.244.63.255 60.245.0.0~60.245.63.255 60.245.128.0~60.245.255.255 60.247.0.0~60.252.255.255 60.253.128.0~60.253.255.255 60.255.0.0~60.255.255.255 61.4.0.0~61.4.95.255 61.4.176.0~61.4.191.255 61.8.160.0~61.8.175.255 61.10.0.0~61.10.255.255 61.14.128.0~61.14.131.95 61.14.145.0~61.14.145.255 61.14.153.0~61.14.153.255 61.14.165.0~61.14.165.255 61.14.188.0~61.14.191.255 61.15.0.0~61.15.255.255 61.18.0.0~61.18.255.255 61.20.0.0~61.20.255.255 61.26.103.0~61.26.103.255 61.28.0.0~61.28.127.255 61.29.128.0~61.29.202.255 61.29.204.0~61.29.204.255 61.29.208.0~61.31.255.255 61.45.128.0~61.45.191.255 61.47.128.0~61.47.191.255 61.48.0.0~61.66.230.255 61.70.0.0~61.71.255.255 61.87.192.0~61.87.255.255 61.92.0.0~61.93.255.255 61.128.0.0~61.191.255.255 61.216.0.0~61.244.255.255 116.0.24.0~116.0.31.255 116.1.0.0~116.11.255.255 116.16.0.0~116.31.255.255 116.48.0.0~116.49.255.255 116.50.8.0~116.50.15.255 116.50.32.0~116.50.47.255 116.52.0.0~116.55.255.255 121.0.16.0~121.0.31.255 121.4.0.0~121.5.255.255 121.8.0.0~121.43.255.255 121.46.0.0~121.49.255.255 121.51.0.0~121.51.255.255 121.55.0.0~121.55.63.255 121.56.0.0~121.58.127.255 121.59.0.0~121.63.255.255 121.68.0.0~121.71.255.255 121.76.0.0~121.77.255.255 121.89.0.0~121.89.255.255 121.100.128.0~121.100.255.255 121.192.0.0~121.195.255.255 121.201.0.0~121.207.255.255 121.224.0.0~121.239.255.255 121.248.0.0~121.251.255.255 121.254.64.0~21.254.127.255 121.255.0.0~121.255.255.255 122.0.64.0~122.0.255.255 122.4.0.0~122.15.255.255 122.48.0.0~122.49.63.255 122.51.0.0~122.51.255.255 122.64.0.0~122.97.255.255 122.99.0.0~122.99.63.255 122.100.64.0~122.100.127.255 122.102.0.0~122.102.15.255 122.102.32.0~122.102.39.255 122.102.64.0~122.102.95.255 122.116.0.0~122.118.255.255 122.120.0.0~122.127.255.255 122.128.80.0~122.128.87.255 122.128.104.0~122.128.111.255 122.136.0.0~122.143.255.255 122.144.32.0~122.144.63.255 122.144.128.0~122.144.255.255 122.146.0.0~122.147.255.255 122.152.192.0~122.152.255.255 122.156.0.0~122.159.255.255 122.192.0.0~122.195.255.255 122.198.0.0~122.198.255.255 122.200.64.0~122.200.127.255 122.201.32.0~122.201.47.255 122.201.128.0~122.201.255.255 122.204.0.0~122.207.255.255 122.224.0.0~122.247.255.255 122.248.16.0~122.248.31.255 122.248.48.0~122.248.63.255 122.252.24.0~122.252.31.255 122.252.160.0~122.252.175.255 122.254.0.0~122.254.63.255 122.255.80.0~122.255.95.255 123.0.32.0~123.0.63.255 123.0.128.0~123.0.255.255 123.4.0.0~123.15.255.255 123.49.128.0~123.49.255.255 123.50.32.0~123.50.63.255 123.52.0.0~123.98.127.255 123.99.0.0~123.99.31.255 123.99.128.0~123.100.31.255 123.101.0.0~123.101.255.255 123.103.0.0~123.103.127.255 123.108.128.0~123.108.143.255 123.108.208.0~123.108.223.255 123.110.0.0~123.110.255.255 123.112.0.0~123.136.15.255 123.136.80.0~123.136.95.255 123.137.0.0~123.139.255.255 123.144.0.0~123.175.255.255 123.177.0.0~123.187.255.255 123.192.0.0~123.197.255.255 123.199.128.0~123.199.255.255 123.202.0.0~123.207.255.255 123.232.0.0~123.235.255.255 123.240.0.0~123.242.127.255 123.242.224.0~123.242.231.255 123.244.0.0~123.247.255.255 123.249.0.0~123.249.255.255 123.252.0.0~123.252.127.255 123.253.0.0~ 。