Frequently Asked Questions
Common questions about IP addresses and IP.CD services
Your IP address is a unique identifier assigned to your device by your Internet Service Provider (ISP). IP.CD instantly shows your public IPv4 and IPv6 addresses along with geolocation details.
IPv4 uses 32-bit addresses (e.g., 192.168.1.1) while IPv6 uses 128-bit addresses (e.g., 2001:db8::1). IPv6 provides a much larger address space to accommodate the growing number of internet-connected devices.
Yes, IP.CD is completely free. We provide IP lookup services, geolocation data, and a developer-friendly API at no cost.
IP.CD uses Cloudflare edge network data which provides highly accurate country and region information. City-level accuracy may vary depending on your ISP and network configuration.
Yes! Our API is free and supports multiple formats including JSON, plain text, and JSONP. Simply make requests to api.ip.cd, 4.ip.cd (IPv4 only), or 6.ip.cd (IPv6 only).