IPv4 Address Class

  1. Class A: 1-126
  2. Class B: 128-191
  3. Class C: 192-223

Private IPv4 Address Space

  1. 10.0.0.0 – 10.255.255.255
  2. 172.16.0.0 – 172.31.255.255
  3. 192.168.0.0 – 192.168.255.255