Table I-3: IPv4 Address Classes Class Address Range Networks per Class Hosts per Network A 1.0.0.1 to 126.255.255.254 126 16,777,214 B 128.0.0.1 to 191.255.255.254 16,384 65,534 C 192.0.0.1 to 223.255.255.254 2,097,152 254 D Reserved for multicast purposes E Reserved for experimental use The Internet Corporation for Assigned Names and Numbers (ICANN) assigns public IP addresses to organizations desiring to place computers on the Internet.Theoretically speaking, the size of the user organ- 74570c09.qxd 9/11/07 12:22 PM Page 255 |