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Sift Web Tools – WHOIS Domain Lookup
x402
Sift Web Tools – WHOIS Domain Lookup is a paid API for AI agents from sift.srv1996466.hstgr.cloud, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-23).
Returns WHOIS registration facts for a domain, including registrar, registration date, and domain age in days
Price / call$0.003
Success—
StatusUnknown
How this service works
Domain WHOIS via RDAP: registrar, creation and expiry dates, age. Registration data from the official RDAP registry: registrar, status, created, updated, expiry, domain age in days, nameservers, DNSSEC.
Output
Returns a JSON object with the domain name, whether it is registered, the registrar name, the registration date, and the domain age in days (e.g. {"domain":"example.com","age_days":11000,"registrar":"RESERVED-Internet Assigned Numbers Authority","registered":true}).
Example use cases
Vetting an unfamiliar vendor domain
“Before I sign up, can you check the WHOIS record for getfastcash-loans.biz — I want to know how old the domain is and who registered it?”
Security research on a phishing link
“I got a suspicious email from support@secure-paypal-verify.com — can you pull the WHOIS data on that domain so I can see when it was created and who the registrar is?”
Competitive intelligence on a rival site
“Can you look up the WHOIS record for rival-startup.io? I'm curious how long they've been around and which registrar they use.”
Technical details
Endpoint
GEThttps://sift.srv1996466.hstgr.cloud/v1/whois?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need quick, structured domain registration facts (registrar, age, registered status) for a single domain in real time — especially useful for trust-scoring unfamiliar domains, OSINT workflows, phishing triage, or vendor vetting. Prefer this over raw WHOIS CLI tools when you need JSON output ready for downstream agent logic. Pay-per-call pricing (charged only on success) makes it cost-effective for sporadic lookups without subscription overhead.
Side effects
- Domain not found or unregistered — may return registered: false with no further details
- Invalid domain format — missing required 'domain' query parameter returns a 4xx error and no charge
- WHOIS data unavailable for certain TLDs with privacy-restricted registries
- Network timeout reaching the WHOIS registry — no charge on non-200 response
- Rate limiting by upstream WHOIS registry may cause intermittent failures
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"domain": "example.com",
"age_days": 11000,
"registrar": "RESERVED-Internet Assigned Numbers Authority",
"registered": true
}
}Tags
x402
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