1. Class B
    1. 128.0.x.x - 191.255.x.x
    2. 16,000 Networks
    3. 65,000 Clients
    4. Typically used in larger business networks
  2. Class A
    1. 1.x.x.x - 126.x.x.x
    2. 127 Networks
    3. 16 Million Clients
    4. Typically used at ISP network level
  3. Class C
    1. 192.0.0.x - 223.255.255.x
    2. 254 Clients
    3. 2 Million Networks
    4. Typically used in the SoHo