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fetchx402 WHOIS / RDAP Domain Lookup
x402
fetchx402 WHOIS / RDAP Domain Lookup is a paid API for AI agents from api.fetchx402.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Returns live RDAP-based domain registration facts (registrar, status, dates, nameservers, DNSSEC) for a given fully-qualified domain name.
Price / call$0.005
Success—
StatusUnknown
How this service works
Look up domain registration facts via RDAP (registrar, status, dates, nameservers, DNSSEC). Use when you need live registry data and must not guess. Unregistered names return not_found.
Output
A structured RDAP record containing: registrar name, domain status flags (e.g. clientTransferProhibited), creation/updated/expiration dates, nameserver hostnames, DNSSEC delegation status, and registry identifiers. If the domain is not registered, returns a not_found result rather than guessing.
Example use cases
Domain expiry monitoring for portfolio
“Check the live registry data for mybrand.io and tell me when it expires and who the registrar is — I want to make sure it doesn't lapse.”
Verifying a domain before outreach
“Before I email the owner of acmecorp.net, can you confirm it's actually registered and tell me its current status and registrar from RDAP?”
Security audit for DNSSEC coverage
“Look up the domain registration facts for payments.example.com from the live registry — specifically whether DNSSEC is active and what nameservers it's delegated to.”
Technical details
Endpoint
GEThttps://api.fetchx402.com/v1/tools/whoisWhen to prefer
Choose this endpoint when you need authoritative, live domain registration facts from the official RDAP registry — not cached WHOIS snapshots. It is the right choice when you must confirm registration status, expiry, registrar identity, nameserver delegation, or DNSSEC without guessing. Prefer it over DNS-only lookups when the question is about ownership and registration lifecycle rather than DNS resolution. For a single-call bundle of DNS + TLS + RDAP facts, consider the sibling all-in-one endpoint instead.
Side effects
- Domain not registered — returns not_found rather than an error
- Invalid or non-public domain (IP address, localhost, mDNS name) — rejected with an error
- RDAP registry unavailable for the TLD — may return a timeout or incomplete data
- Malformed domain string (missing TLD, special characters) — rejected at input validation
- Payment failure (x402 protocol) — call not executed, no data returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"dnssec": true,
"domain": "example.com",
"handle": "2336799_DOMAIN_COM-VRSN",
"source": "rdap",
"status": [
"client delete prohibited",
"client transfer prohibited",
"client update prohibited"
],
"registrar": {
"name": "RESERVED-Internet Assigned Numbers Authority",
"iana_id": "376"
},
"created_at": "1995-08-14T04:00:00Z",
"expires_at": "2025-08-13T04:00:00Z",
"updated_at": "2024-08-14T07:01:39Z",
"nameservers": [
"a.iana-servers.net",
"b.iana-servers.net"
],
"rdap_server": "https://rdap.verisign.com/com/v1/"
}
}Tags
x402
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