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ipv4.fr WHOIS Lookup API
x402
ipv4.fr WHOIS Lookup API is a paid API for AI agents from ipv4.fr, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-29).
Retrieves WHOIS registration data for a given domain, including registrar, creation date, and ownership details
Price / call$0.003
Success—
StatusUnknown
How this service works
Fast, reliable network tools API. IP geolocation, DNS lookup, SSL check, WHOIS, email validation, port scan. Free tier available.
Output
A JSON object containing the queried domain name and a parsed WHOIS record with fields such as registrar name, creation date, expiration date, updated date, registrant contact details, and nameservers — all derived from public WHOIS registry data.
Example use cases
Domain ownership investigation
“Who owns the domain phishing-scam-site.net? I need to know the registrar, when it was registered, and any contact info from the WHOIS record.”
Check domain age before purchase
“Before I make an offer to buy brandname.com, can you check its WHOIS record and tell me how old it is and when it expires?”
Security threat research
“I'm investigating a suspicious domain — can you get the WHOIS data for malware-dropper.ru so I can see when it was created and who registered it?”
Technical details
Endpoint
GEThttps://ipv4.fr/x402/v1/whois/%7Bdomain%7D?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need quick, parsed WHOIS registration data for a domain without setting up a full WHOIS client. It is ideal for agents performing domain due diligence, cybersecurity investigations, or domain age verification, and is priced per call at $0.003 USDC making it cost-effective for occasional lookups. Prefer this over raw WHOIS socket queries when you need structured, JSON-parsed output rather than raw text.
Side effects
- Domain not found or unregistered — returns empty or error response
- TLD not supported by WHOIS lookup — may return incomplete data
- WHOIS rate limiting by upstream registry — may result in timeout or empty response
- Malformed domain input — invalid domain format causes request failure
- Private/redacted WHOIS — registrant info may be masked by privacy services
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"domain": "example.com",
"parsed": {
"registrar": "Example Registrar",
"creation_date": "1995-08-14T04:00:00Z"
}
}
}Tags
x402
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