WorldIP.io

In plain words

WorldIP is a free curl API that provides IP address information accessible directly from the terminal. Users can query their own IP or any specific IP address to retrieve details. The service distinguishes itself by operating its own global scanning infrastructure capable of scanning the entire IPv4 space in approximately 24 hours, rather than reselling data from another provider. It serves developers who need IP data lookups without relying on third-party data sources.

written from the facts on this page · September 2026

From the sources

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 and forward DNS across all 4.3 billion IPv4 addresses. 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.

Look up who owns any IP address: organization, ASN, RIR registry, CIDR, reverse DNS and geolocation. Free, no signup, all 4.3 billion IPv4 addresses.

Owner, ASN, geolocation, reverse DNS, live BGP, and VPN / proxy / threat classification for every IPv4 address — returned as clean JSON in sub-second responses. 🔓 From any shell: curl worldip.io/8.8.8.8 — quick, free details on any IP, no key, no signup . Rate-limited per your IP · ~10× the volume with a free account. # Your IP — free, no key, no signup: curl -s worldip.io { "ip" : "5.223.60.184" , "ptr" : "static.184.60.223.5.clients.your-server.de" , "forward_dns" : { "hostname" : "static.184.60.223.5.clients.your-server.de" , "confirmed" : true }, "asn" : { "number" : 215859 , "name" : "Hetzner Online GmbH" }, "org" : { "name" : "Hetzner Online GmbH" }, "country" : { "code" : "SG" ,…from worldip.io

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