Q: What is the difference between IPv4 and IPv6?
IPv4 uses 32-bit addresses (e.g., 192.168.1.1) supporting ~4.3 billion addresses. IPv6 uses 128-bit addresses (e.g., 2001:db8::1) supporting virtually unlimited addresses.
Q: What are IP classes?
IPv4 addresses are divided into classes A (1-126), B (128-191), C (192-223), D (224-239, multicast), and E (240-255, reserved). Class determines the default network/host split.
Q: What is a private IP address?
Private IPs are reserved for internal networks: 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16. They are not routable on the public internet.
Q: Does this tool detect my VPN or proxy IP?
Yes. The tool shows the IP address visible to the internet, which is the VPN or proxy exit node IP if you are connected through one. It reflects exactly what external servers see when you connect.
Q: Why does my IP look different from my local IP?
This tool shows your public IP assigned by your ISP, which differs from your local/private IP used within your network (e.g., 192.168.x.x).