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Domain WHOIS (RDAP)
x402
Domain WHOIS (RDAP) is a paid API for AI agents from bess-x402.onrender.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-28).
Retrieves official RDAP/WHOIS registration data for a domain, including registrar, dates, status codes, nameservers, DNSSEC, and registrant info, plus availability indication for unregistered names.
Price / call$0.003
Success—
StatusUnknown
How this service works
Registration data of a domain from RDAP, the official WHOIS successor: registrar, creation, update and expiry dates, status codes, nameservers, DNSSEC and registrant organisation/country where public. Says whether an unregistered name looks available. Use for domain research, due diligence or phishing checks.
Output
Returns structured RDAP registration data including: registrar name, creation/update/expiry dates, domain status codes (e.g. clientTransferProhibited), nameservers, DNSSEC status, registrant organisation and country (where publicly available). For unregistered domains, indicates that the name appears available.
Example use cases
Phishing domain investigation
“I got a suspicious email from support@paypa1-secure.com — can you do a WHOIS lookup on paypa1-secure.com and tell me when it was registered, who the registrar is, and where the registrant is from? I want to know if this looks like a phishing domain.”
Competitor domain due diligence
“We're considering acquiring a startup — can you look up the RDAP registration data for acmecorp.io and tell me the creation date, expiry date, current status codes, and nameservers?”
Check if domain is available
“Is the domain name brightmindstudio.com available to register? Can you check RDAP and see if it's taken or looks unregistered?”
Technical details
Endpoint
GEThttps://bess-x402.onrender.com/v1/web/whois?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need authoritative, structured WHOIS/RDAP data for a domain — including registrar, lifecycle dates, status codes, nameservers, and registrant details — particularly for due diligence, phishing investigation, domain availability checks, or DNS infrastructure research. Prefer over scraping raw WHOIS text since RDAP returns clean structured JSON. Best for single-domain lookups where accuracy and official data matter.
Side effects
- Domain not found in RDAP — may indicate unregistered or obscure TLD not covered by RDAP
- Invalid domain format in query parameter returns validation error
- RDAP registry for the TLD is temporarily unavailable causing timeout
- Privacy/redaction by registrar means registrant fields are empty or redacted
- ccTLDs with non-standard RDAP implementations may return partial data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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