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Public vs Private IP

  • Private IP can only allow certain values:
    • 10.0.0.0 to 10.255.255.255 (10.0.0.0/8) ← in big networks
    • 172.16.0.0 to 172.31.255.255 (172.16.0.0/12) ← AWS default VPC in that range
    • 192.168.0.0 to 192.168.255.255 (192.168.0.0/16) ← e.g., home networks
  • All the rest of the IP addresses are Public.