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WorldData402 Domain RDAP Lookup
x402
WorldData402 Domain RDAP Lookup is a paid API for AI agents from worlddata402.worlddata402.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-19).
Retrieves RDAP (Registration Data Access Protocol) registration data for a given domain name, including registrar, registrant, dates, and nameservers.
Price / call$0.02
Success—
StatusUnknown
How this service works
Global market, government and reference data for AI agents. Pay-per-call over x402 (USDC on Base mainnet).
Output
Returns a structured RDAP record for the queried domain including registrar name and IANA ID, registrant contact details (if not redacted), registration and last-updated timestamps, expiration date, domain status codes, and nameserver hostnames.
Example use cases
Verify domain ownership before outreach
“Before I reach out to this company, can you pull the RDAP registration record for acmecorp.io so I can see who owns it and when their registration expires?”
Check domain expiry for acquisition monitoring
“I'm watching techstartup.com as a potential acquisition target — can you fetch its RDAP record so I know the expiration date and whether it's about to lapse?”
Audit third-party vendor domain details
“We're doing a vendor security review — can you get the RDAP registration data for vendorpayments.net, including registrar, nameservers, and status flags?”
Technical details
Endpoint
POSThttps://worlddata402.worlddata402.workers.dev/v1/domain/rdap/%7Bdomain%7D?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need structured, machine-readable domain registration data (RDAP) rather than raw WHOIS text. It is especially useful for AI agents that need to programmatically parse registrar, ownership, expiry, and nameserver data without scraping unstructured WHOIS output. Prefer this over generic WHOIS tools when working within a pay-per-call micropayment workflow using x402/USDC on Base.
Side effects
- Domain not found or unregistered — returns 404 or empty RDAP response
- Invalid domain format — malformed input may return a 400 error
- Registry does not support RDAP — some ccTLDs may not have RDAP coverage
- Payment failure — insufficient USDC balance or x402 payment not accepted
- Rate limiting or service unavailability from upstream RDAP registry
Tags
x402
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