About WorldIP.io

WorldIP.io is a production-grade IP intelligence platform built and operated by Tuxxin LLC. We map the entire IPv4 Internet — every address, network, and organization — from infrastructure we own and run, not a reseller feed.

Most IP-data providers resell the same handful of geolocation databases. We take the opposite approach: a globally distributed scanner fleet across North America, Europe, and Asia-Pacific continuously resolves reverse DNS across all 4.3 billion IPv4 addresses and forward-confirms the hostnames it finds. The data is first-party, kept fresh in near real time, and served as clean JSON in under a second. Our fourth-generation scanner engine is built to complete a full pass of the IPv4 space in under 24 hours.

The platform runs the way a production service should — replicated across regions, continuously monitored, and engineered for accuracy at scale. A free public site sits on top of it, plus a keyless public API that is live today — call it from a single curl https://worldip.io/8.8.8.8 — and enriched, higher-volume subscription plans (VPN/proxy and datacenter classification, trust scoring, and live BGP) for teams that need more. New data products ship on a steady cadence. For a live look at the platform, see our infrastructure status page.

WorldIP.io exists to make IPv4 address data accessible to everyone. We merge multiple authoritative data sources into a single, fast, searchable database covering all 4.3 billion IPv4 addresses.

Whether you're a network engineer investigating a routing issue, a security analyst tracing an IP, or just curious about who owns an address — we provide the answer in under a second, free, with no signup required.

WorldIP.io combines authoritative allocation data, our own continuous scanning and privacy analysis, and public threat intelligence:

• MaxMind GeoLite2 — IP-to-country, -city and -ASN mappings, checked daily for new releases (used under the MaxMind GeoLite End User License Agreement; includes GeoNames data under CC BY 4.0).
• RIR delegation files — IANA and the five Regional Internet Registries (ARIN, RIPE NCC, APNIC, LACNIC, AFRINIC), polled every six hours for allocations, transfers and country re-assignments.
• ipinfo Lite — a free, daily ASN/country dataset that backfills coverage MaxMind doesn't include (CC BY-SA 4.0).
• Our scanner fleet — a multi-region fleet continuously resolves reverse-DNS (PTR) for every allocated IPv4 address over an encrypted mesh, so hostnames are indexed and searchable instantly.
• issued.live — our sister service for everything in front of an IP (also operated by Tuxxin LLC): a weekly count of the domains hosted on each address, shown on every IPv4 page. The domain names, certificates and DNS history are on issued.live.
• BGP routing (RIPE RIS) + RPKI — the live global routing table from 23 collectors supplies announced prefixes, origin ASNs, route-anomaly detection and RPKI validity.
• Threat-intelligence blocklists — eight independent feeds (Spamhaus DROP, abuse.ch Feodo Tracker, ET Compromised, FireHOL Level 1, IPsum, blocklist.de, the Tor Project, plus Team Cymru bogons) drive the IP reputation / trust score.
• Privacy & proxy intelligence — residential and mobile proxy detection from GRIP's (General Research IP) residential-proxy feed and WorldIP's own validated proxy-exit observations, alongside VPN, Tor and datacenter classification with a decay-scored confidence signal, driving the access-type and privacy indicators on each IP page.

For full technical details, licensing and attribution, see our data sources & methodology page.