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Domain DNS WHOIS Email Check
x402
Domain DNS WHOIS Email Check is a paid API for AI agents from api.stablecoingateways.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-29).
Looks up a domain's DNS records, WHOIS/RDAP registration details, and email authentication posture (SPF, DMARC, DKIM, MTA-STS) plus HTTPS/HSTS status in a single call.
Price / call$0.003
Success—
StatusUnknown
How this service works
Domain lookup (DNS, WHOIS/RDAP, email security): give a domain or hostname, get DNS records (A, AAAA, MX, NS, TXT, CAA), SPF, DMARC, DKIM and MTA-STS email-auth posture, HTTPS/HSTS status, and registrar, creation and expiry dates from registry RDAP. Use when checking a domain's setup, deliverability or age. No personal data. Signed receipt.
Output
Returns a JSON object with: DNS records (A, AAAA, MX, NS, TXT count, CAA), RDAP registration data (registrar, registered/expiry dates, nameservers, DNSSEC signed, domain availability), HTTPS probe result (reachable, HTTP status, HSTS, redirect host), email authentication posture (SPF record details, DMARC policy, DKIM selectors found, MTA-STS), whether the domain exists, data sources used, and a signed payment receipt including tx hash and response hash.
Example use cases
Email deliverability audit before sending campaign
“Before I send out our marketing campaign from mycompany.com, can you check whether we have SPF, DMARC, and DKIM properly set up, and whether MTA-STS is enabled?”
Vendor domain age and registrar check
“We just got a payment request from a vendor using the domain quickpay-solutions.net — can you look up when it was registered, who the registrar is, and whether it has any DNS records set up? I want to make sure it's not a newly created phishing domain.”
Domain infrastructure review for IT team
“Can you pull the full DNS picture for our domain acmecorp.com — A, AAAA, MX, NS, CAA records, DNSSEC status, and whether the HTTPS endpoint is reachable with HSTS?”
Technical details
Endpoint
GEThttps://api.stablecoingateways.com/v1/domain-facts?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a comprehensive, single-call snapshot of a domain's DNS infrastructure, email authentication configuration, and registration metadata. It is ideal for email deliverability audits, phishing/suspicious domain triage, vendor due diligence, and domain age checks. Prefer it over manual DNS lookups or separate WHOIS tools when you need SPF+DMARC+DKIM+MTA-STS all in one response with a signed receipt for audit trails.
Side effects
- Domain does not exist or has no DNS records — returns exists: false with minimal data
- RDAP registry unavailable for TLD — rdap.note field explains fallback or missing registration data
- DKIM selectors not found for common defaults — dkim_selectors_found may be empty
- Domain pattern validation fails (too short, invalid chars) — 400 error
- Payment not received or insufficient — 402 Payment Required before data is returned
- HTTPS probe times out — https.reachable set to false, status may be absent
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"dns": {
"a": [
"104.20.23.154"
],
"mx": [
{}
],
"ns": [
"hera.ns.cloudflare.com"
],
"caa": [],
"aaaa": [
"2606:4700:10::ac42:93f3"
]
},
"rdap": {
"source": "https://rdap.verisign.com/com/v1/",
"available": true,
"registrar": "RESERVED-Internet Assigned Numbers Authority",
"registered_domain": "example.com",
"registrar_iana_id": "376"
},
"https": {
"hsts": null,
"probed": true,
"status": 200,
"reachable": true,
"redirect_host": null
},
"notes": "TLS certificate details are not inspected from Workers; https.reachable reflects a succ...",
"domain": "example.com",
"exists": true,
"sources": [
"DNS via Cloudflare DoH (cloudflare-dns.com)"
],
"mail_auth": {
"spf": {
"present": true,
"includes": [],
"all_qualifier": "-all",
"dns_lookup_terms": 0,
"multiple_records": false
},
"dmarc": {
"pct": 100,
"adkim": "s",
"policy": "reject",
"present": true,
"subdomain_policy": "reject"
},
"mta_sts": false,
"dkim_selectors_found": [
{}
],
"dkim_selectors_checked": [
"default"
]
},
"checked_at": "2026-10-22T09:01:19.207Z"
},
"receipt": {
"v": 1,
"ts": "2026-10-22T09:00:00Z",
"sig": "hex",
"price": {
"asset": "USDC",
"amount": "3000",
"network": "eip155:84532"
},
"log_seq": 1,
"tx_hash": "0x..",
"endpoint_id": "domain-facts-v1",
"request_hash": "hex",
"response_hash": "hex"
}
}
}Tags
x402
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