IP & Geolocation Tools

Detect whether any IPv4 or IPv6 address is public, private (RFC 1918), loopback, link-local, multicast, broadcast, reserved, CGNAT (RFC 6598), documentation (RFC 5737), or benchmarking (RFC 2544). Includes binary, hex, expanded IPv6 notation, and CIDR range information - all processed locally in your browser. Free online IP type detector - no signup required.

Check if any IPv4 or IPv6 address is a bogon (martian) address - an IP that should never appear on the public internet. Detects private RFC 1918 ranges, loopback, link-local, multicast, broadcast, CGNAT, documentation, benchmarking, IANA reserved, and IPv6 special-purpose addresses. All processing happens locally in your browser - free online bogon IP detector, no signup required.

Track your public IP address changes over time. Check your current IP, view a complete timeline of IP changes, analyse IP change frequency, and monitor IP stability. Automatic IP detection via ipify.org API with all history stored locally in your browser. Free online My IP History tool - no signup required.

Look up any Autonomous System Number (ASN) to find the organization, IP address prefixes (IPv4 and IPv6), peer ASNs, upstream providers, and downstream customers. Enter an ASN number or IP address - data sourced from the public BGPView API. Free online ASN lookup.