有谁知道A，B，C类网址的保留地址的范围？谢谢
---------------------------------------------------------------
10.0.0.0 - 10.255.255.255 1个A类
172.16.0.0 - 172.31.255.255 16个B类
192.168.0.0 - 192.168.255.255 1个B类
---------------------------------------------------------------