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Domain Intel
x402
Domain Intel is a paid API for AI agents from dns.netzhandwerker.de, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-12).
Performs comprehensive domain reconnaissance including DNS records, WHOIS, SPF/DMARC/DKIM email security checks, TLS certificate details, and Certificate Transparency subdomain enumeration.
Price / call$0.003
Success—
StatusUnknown
How this service works
Domain in, WHOIS, DNS, mail policy, TLS certificate and subdomains out. Pay per call in USDC over x402. No signup, no API key.
Output
Returns a structured JSON object covering: resolved A and AAAA IPs; MX, NS, TXT, CAA, and SOA records; parsed (and optionally raw) WHOIS data from the responsible registry; SPF policy, DMARC policy, and known DKIM selectors; TLS leaf certificate (or full chain if requested) with issuer, validity window, and SAN list; and a deduplicated list of subdomains harvested from Certificate Transparency logs and the certificate SAN list. Fields unavailable due to registry restrictions are reported as unknown rather than omitted or guessed.
Example use cases
Email deliverability security audit
“Check the email security configuration for acme.com — I need to know if they have valid SPF, DMARC, and any known DKIM selectors set up.”
Pre-acquisition domain due diligence
“I'm looking at acquiring targetstartup.io — can you pull the full domain intel including WHOIS ownership, DNS records, TLS certificate details, and all subdomains from certificate transparency?”
TLS certificate expiry check
“Can you inspect the TLS certificate for api.mycompany.com and tell me who issued it, when it expires, and what domains are listed in the SAN list?”
Technical details
Endpoint
POSThttps://dns.netzhandwerker.de/domain?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a single-call comprehensive domain profile combining DNS, WHOIS, email security (SPF/DMARC/DKIM), TLS, and subdomain discovery rather than querying multiple specialized APIs separately. It is especially suited for security audits, domain due diligence, onboarding checks, and email deliverability investigations where breadth of coverage per API call matters. It is transparent about data gaps (unknown vs. guessed), making it reliable for compliance or reporting contexts.
Side effects
- Domain does not exist (NXDOMAIN) — relevant DNS fields returned as empty or not-found
- Registry refuses to answer WHOIS — fields reported as unknown rather than guessed
- TLS handshake failure if domain has no HTTPS — certificate fields absent
- crt.sh timeout or unavailability — subdomains field may be incomplete
- Invalid domain input (malformed string not reducible to a hostname) — input validation error
- Rate limiting or network-level block from upstream DNS resolvers
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domain | string | Domain without scheme, for example example.com. A full URL or a mail address is accepted and reduced to its host. |
| whois_raw | boolean | Include the unparsed WHOIS text of the registry answer. |
| cert_chain | boolean | Return the full certificate chain the server presents, not only the leaf certificate. |
| subdomains | boolean | Collect subdomains from Certificate Transparency (crt.sh) and the certificate SAN list. |
Tags
x402
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