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Arch Tools WHOIS Lookup
x402
Arch Tools WHOIS Lookup is a paid API for AI agents from archtools.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Performs a WHOIS lookup for a given domain name, returning registration and ownership information
Price / call$0.01
Success—
StatusUnknown
How this service works
Domain registration, expiry, nameservers via RDAP. Pay per call with USDC (x402) or credits - archtools.dev
Output
A JSON object containing WHOIS data for the queried domain, typically including registrar name, registration and expiration dates, registrant contact details (where publicly available), name servers, and domain status flags.
Example use cases
Domain ownership investigation
“Who owns the domain suspicioussite.xyz? I need the registrant, registrar, and registration date from a WHOIS lookup.”
Domain expiry check before purchase
“Can you check the WHOIS record for mybrand.com and tell me when it's set to expire? I want to know if it's coming up for renewal soon.”
Competitive research on brand domain
“Look up the WHOIS info for competitor-brand.io — I want to know when they registered it and who their registrar is.”
Technical details
Endpoint
POSThttps://archtools.dev/v1/tools/whois-lookupWhen to prefer
Choose this endpoint when you need quick, pay-per-call WHOIS data without managing your own WHOIS client or API keys. It is especially useful for agents doing domain intelligence, cybersecurity research, competitive analysis, or pre-purchase domain research. At $0.01 per call it is cost-effective for occasional lookups integrated into automated workflows via the x402 payment protocol.
Side effects
- Domain not found or not registered — returns empty or error response
- WHOIS data redacted by privacy protection services — limited registrant info returned
- Invalid domain format supplied — validation error
- Rate limiting or temporary unavailability of upstream WHOIS servers
- TLD not supported by WHOIS lookup service
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domain | string | Domain name to look up (e.g. example.com) |
Tags
x402
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