IP Geolocation API for Developers: Free JSON Lookup Guide

PINIP.net offers a free JSON endpoint for developers who need geolocation, ISP, ASN, and security hints without scraping HTML. Full reference: API documentation.

curl -s "https://pinip.net/api?ip=8.8.8.8"

Replace the IP with any valid IPv4 or IPv6 address. Omit ip to resolve the caller's address.

• ip, country, city, latitude, longitude
• isp, org, asn
• proxy, hosting, mobile when available

const res = await fetch("https://pinip.net/api?ip=1.1.1.1");
const data = await res.json();
console.log(data.country, data.isp);

• Cache responses per IP for 1–24 hours.
• Handle null coordinates gracefully.
• Never rely on IP alone for authentication.
• Combine with our VPN/proxy signals.