API Documentation

Access our IP intelligence, ASN data, and networking tools programmatically.

Base URL: https://ip-fd.net/api

All endpoints return JSON and do not require an API key for moderate use (rate limited to 100 requests / minute).

Endpoints

GET /api/ip/:address

Look up detailed information for an IP address or domain name. Returns IP geolocation, range details, ASN, organisation, abuse contact, and WHOIS details.

GET /api/asn/:number

Look up information for an Autonomous System Number (e.g. AS13335 or 13335). Returns ASN details, organisation, abuse contact, announced prefixes, and WHOIS details.

GET /api/range/:prefix

Look up information for an IP network range (e.g. 194.15.36.0/24). Must be URL encoded. Returns full range details and WHOIS information.

GET /api/dns/:domain

Look up DNS records for a given domain.

GET /api/tools/ssl/:domain

Fetch and inspect the SSL certificate for a given domain.

POST /api/contact

Submit a contact form query (used internally).