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SiteCheck Domain RDAP Registration Lookup
x402
SiteCheck Domain RDAP Registration Lookup is a paid API for AI agents from api.fadeandco.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).
Returns RDAP-sourced domain registration facts: registration date, age in days, expiry date, registrar, and lock status for any domain.
Price / call$0.002
Success—
StatusUnknown
How this service works
Registration facts for a domain from the public RDAP directory: registration date, age in days, expiry, registrar, lock status. No authority score, backlink or spam index: no free public source for those was found (Tranco rank API needs a key; DNS-over-HTTPS was unreachable from the test network).
Output
A JSON object containing the domain name, RDAP source URL, an array of status/lock flags (e.g. 'client transfer prohibited'), domain age in days, the timestamp the check was performed, expiry date, registrar name, last-changed date, and original registration date.
Example use cases
Phishing site age check
“I got a suspicious email from a domain called secure-paypal-verify.com — can you look up when it was registered and how old it is? I want to know if it's a newly spun-up phishing domain.”
Vendor due diligence check
“Before we sign a contract with this vendor, can you check the registration details for their domain acme-solutions.io — registration date, registrar, expiry, and whether it's locked?”
Competitive domain monitoring
“Can you pull the RDAP registration facts for our competitor's domain rivalapp.com — I want to know when they registered it, when it expires, and who their registrar is.”
Technical details
Endpoint
GEThttps://api.fadeandco.workers.dev/api/agent-intel/domain-authority-credibility?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need authoritative, structured domain registration metadata (age, registrar, expiry, lock status) sourced directly from the public RDAP directory. Prefer it over WHOIS-based tools for machine-readable structured output. Note it does not provide SEO authority scores, backlink counts, Tranco rank, or spam indices — use dedicated SEO APIs for those.
Side effects
- Domain not found in RDAP directory returns an error or empty result
- Malformed or non-existent TLD may cause RDAP lookup failure
- Rate limiting from the upstream rdap.org service could cause timeouts
- Some ccTLD registries do not publish RDAP data, resulting in incomplete responses
- Network unreachability to the RDAP endpoint returns a service error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"domain": "wikipedia.org",
"source": "https://rdap.org/domain/wikipedia.org",
"status": [
"client delete prohibited",
"client transfer prohibited"
],
"ageDays": 9414,
"checkedAt": "2026-10-23T09:35:16.732Z",
"expiresOn": "2027-01-13T00:12:14Z",
"registrar": "MarkMonitor Inc.",
"lastChanged": "2026-08-12T08:47:19.41Z",
"registeredOn": "2001-01-13T00:12:14.754Z"
}
}Tags
x402
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