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Domain RDAP Lookup
x402
Domain RDAP Lookup is a paid API for AI agents from eu-tender-x402-v2-production.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-29).
Performs a Registration Data Access Protocol (RDAP) lookup for a given public domain, returning registrar, registration status, and nameserver details.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-call B2B sales lead and procurement intelligence plus Base wallet data for agents. Search EU tenders/RFPs or inspect a Base wallet. Payments use x402 USDC on Base.
Output
Returns a JSON object containing the queried domain name, the product type (e.g. 'Domain Registration Lookup'), the registrar name, a boolean indicating whether the domain is registered, and a list of nameservers associated with the domain.
Example use cases
Verify domain ownership before outreach
“Before we reach out to this company, can you check who registered acmecorp.com and whether it's actually live — I want to know the registrar and nameservers.”
Due diligence on a vendor domain
“We're vetting a new supplier and I need to confirm that supplierco.io is a legitimately registered domain — can you pull its RDAP data and tell me who the registrar is?”
Competitive intelligence on a rival site
“Can you check the domain registration details for our competitor's site rivalfirm.com? I want to know their registrar and nameservers.”
Technical details
Endpoint
GEThttps://eu-tender-x402-v2-production.up.railway.app/api/domain-rdap?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need structured, machine-readable domain registration data (registrar, nameservers, registration status) via a pay-per-call micropayment model using USDC on Base. Prefer it over traditional WHOIS tools when operating in an agentic workflow that supports x402 payments, or when you want programmatic access without rate-limited free-tier restrictions.
Side effects
- Domain not found or not registered — returns registered: false or empty result
- Invalid domain format — malformed input may result in an error response
- Rate limiting or payment failure — x402 USDC payment not processed leads to 402 response
- RDAP registry unavailable for certain TLDs — some obscure TLDs may not have RDAP support
- Network timeout — upstream RDAP server may be slow or unreachable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"domain": "example.com",
"product": "Domain Registration Lookup",
"registrar": "Example Registrar",
"registered": true,
"nameservers": [
"a.iana-servers.net"
]
}
}Tags
x402
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