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Factline Domain Risk & Verification Check
x402
Factline Domain Risk & Verification Check is a paid API for AI agents from factline.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-10).
Checks a domain, URL, or email address for RDAP registration data, DNS email setup, disposable-email detection, and a low/medium/high fraud risk score with human-readable flags.
Price / call$0.003
Success—
StatusUnknown
How this service works
API and MCP servers that let AI agents and apps check people, companies, Dutch addresses and cars against official records: sanctions and PEP lists, 10 company registers, Dutch property, rent and RDW vehicle data. From $0.001 per call.
Output
Returns RDAP registration data (registered date, domain age, expiry, registrar, status, nameservers), DNS email configuration (MX, SPF, DMARC records), a disposable-email indicator, an overall risk level (low/medium/high), and human-readable risk flags such as 'registered 4 days ago' or 'no DMARC record'.
Example use cases
Fraud check during e-commerce onboarding
“A new merchant just signed up with the domain quickdeals-store.net — can you check how long that domain has been registered, who the registrar is, and give me a risk level before I approve their account?”
Disposable email detection at user signup
“Someone is trying to register with the email john@mailnull.com — is that from a disposable email domain, and does the domain have proper MX and SPF records set up?”
KYB domain verification for B2B supplier
“We're about to onboard a new supplier who says their website is acme-supplies.eu — can you pull the RDAP registration details and tell me if there are any red flags like it being registered very recently or missing DMARC?”
Technical details
Endpoint
GEThttps://factline.dev/v1/domain/check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, all-in-one domain risk assessment combining registration age, RDAP metadata, email security configuration, and fraud scoring — particularly in onboarding, KYB, or payment fraud workflows where newly registered or disposable-email domains are a key risk signal. Prefer it over manual WHOIS or individual DNS lookups when you need a structured risk verdict with flags rather than raw data.
Side effects
- Invalid or malformed domain/URL/email input returns an error
- Unregistered or non-existent domain may return no RDAP data
- RDAP registry may be unavailable for some TLDs, resulting in partial data
- DNS lookup timeouts for MX/SPF/DMARC records
- Rate limiting if called excessively without valid payment
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"risk": "low",
"email": {
"mx": [
"smtp.google.com"
],
"spf": true,
"disposable": false,
"accepts_mail": true,
"dmarc_policy": "reject"
},
"flags": [],
"domain": "google.com",
"source": "RDAP (registry registration data, servers per IANA bootstrap); DNS via Cloudflare 1.1.1.1; disposable-email-domains (CC0)",
"explain": {
"risk": "high: does not exist, registered under 30 days ago or a disposable-mail domain; medium: under 6 months old or several setup gaps; low: established and properly set up. A young domain is a common sign of scam shops and phishing, not proof."
},
"registration": {
"status": [
"client delete prohibited",
"client transfer prohibited",
"client update prohibited",
"server delete prohibited",
"server transfer prohibited",
"server update prohibited"
],
"expires": "2028-09-14",
"age_days": 10616,
"registrar": "MarkMonitor Inc.",
"registered": "1997-09-15",
"nameservers": [
"ns1.google.com",
"ns2.google.com",
"ns3.google.com",
"ns4.google.com"
],
"last_changed": "2019-09-09",
"days_until_expiry": 706
}
}
}Tags
x402
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