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Domain Age & Registrar Lookup via RDAP
x402
Domain Age & Registrar Lookup via RDAP is a paid API for AI agents from sigtap-outreach-api.sigtap.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).
Returns a domain's registration date, age in days, and registrar information using RDAP protocol lookup
Price / call$0.003
Success—
StatusUnknown
How this service works
Paid micro-utilities for cold-email outreach agents: domain deliverability audits, cold-email grading, template generation, plus a tools toolbox (hashing, JWT decode, IDs, slugs, JSON, regex, crypto prices, domain age, weather). Paid via x402 (USDC on Base). One signature per call. No keys. FREE CHECK: GET /preview/<paid-path> (same URL with /preview/ prefix) returns a 200 demo sample - verify output shape before paying. PAID CALL: GET the url -> 402 challenge -> sign + retry with X-PAYMENT -> settled on-chain (USDC, Base). Ready-to-paste client: GET /llms.txt section "Pay in one call". Catalog+MCP twin: /llms.txt.
Output
A JSON object containing: the domain name queried, a verdict field (e.g. 'registered'), the domain age in days, the registrar name, the registrar URL (if available), and the ISO 8601 registration date timestamp.
Example use cases
Fraud screening for new signups
“Can you check how old the domain fastcashdeals247.net is? I want to know its registration date and age in days — if it's less than 90 days old I'm going to flag this lead as suspicious.”
Email sender trust check
“Before I reply to this cold email from someone at globalsupplychain-solutions.co, can you look up when that domain was registered and who the registrar is? I want to see if it's a legit long-standing domain or something freshly created.”
Competitive research on a new player
“I just heard about a competitor at vertexai-analytics.io — can you find out when their domain was registered and how old it is in days? Trying to gauge how long they've been around.”
Technical details
Endpoint
GEThttps://sigtap-outreach-api.sigtap.workers.dev/tools/domain-ageWhen to prefer
Choose this endpoint when you need quick, structured domain age and registrar data without setting up your own WHOIS/RDAP client. Ideal for fraud detection pipelines, email trust scoring, lead qualification, and competitive research. Prefer this over raw WHOIS lookups when you want a clean JSON response with a calculated age_days field ready to use in logic.
Side effects
- Domain not found in RDAP — returns null or unregistered verdict
- RDAP registry unavailable for certain TLDs — may return incomplete data
- Invalid domain format input — request may fail or return error
- Newly registered domains with propagation delays may show incomplete records
- Some registrars redact registration dates for privacy — fields may be null
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"domain": "example.com",
"verdict": "registered",
"age_days": 11000,
"registrar": "RESERVED-Internet Assigned Numbers Authority",
"registrar_url": null,
"registration_date": "1995-08-14T04:00:00Z"
}
}Tags
x402
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