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RDAP Domain Lookup
x402
RDAP Domain Lookup is a paid API for AI agents from rdap.openverbs.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-14).
Looks up a domain's RDAP registration data including registrar, status, creation/expiry/update dates, nameservers, and DNSSEC; returns found:false for unregistered domains.
Price / call$0.006
Success—
StatusUnknown
How this service works
Look up a domain's RDAP registration data — registrar, status, creation/expiry/update dates, nameservers and DNSSEC. Unregistered domains return found:false.
Output
Returns structured RDAP data including: a found boolean (false if unregistered), registrar name, domain status flags (e.g. clientTransferProhibited), creation/expiry/last-updated timestamps, nameserver hostnames, and DNSSEC information when available.
Example use cases
Domain availability check before purchase
“Check whether coolstartupname.io is registered or if it's available to buy — I want to know if someone already owns it.”
Domain expiry monitoring for portfolio
“Look up the RDAP data for mybrand.com and tell me when it expires and who the registrar is — I need to make sure it's not about to lapse.”
Security investigation of suspicious domain
“Pull the RDAP registration info for suspicious-phishing-site.net — I want to know when it was created, what its status flags are, and whether DNSSEC is set up.”
Technical details
Endpoint
POSThttps://rdap.openverbs.com/v1/domainWhen to prefer
Choose this endpoint when you need structured, machine-readable domain registration data (RDAP protocol) rather than raw WHOIS text. It's ideal for automated agents checking domain availability, monitoring expiry dates, or investigating domain provenance, and handles the 'not registered' case cleanly via a found flag rather than an error.
Side effects
- Unregistered or non-existent domain returns found:false with no registration data
- Malformed or too-short domain names rejected by schema validation
- TLDs not covered by RDAP bootstrap may return incomplete or no data
- Network timeouts when upstream RDAP servers are slow or unavailable
- Rate limiting may occur under high query volume
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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