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Domain Intel — WHOIS, DNS, TLS & Subdomain Lookup (x402)
x402
Domain Intel — WHOIS, DNS, TLS & Subdomain Lookup (x402) is a paid API for AI agents from dns.halowerk.com, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-13).
Given a domain name, returns WHOIS registration data, DNS records, mail policy (SPF/DKIM/DMARC), TLS certificate details, and subdomain enumeration — paid per call in USDC via x402.
Price / call$0.009
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 report containing: WHOIS registration metadata (registrar, creation/expiry dates, registrant info), full DNS record set (A, AAAA, MX, NS, TXT, CNAME, etc.), mail security policy records (SPF, DKIM, DMARC), TLS certificate chain details (issuer, validity, SANs), and an enumerated list of discovered subdomains.
Example use cases
Investigate suspicious domain during incident
“Someone just sent a phishing email from payments-secure-login.com — can you pull the WHOIS, DNS records, TLS cert, and subdomains for that domain so I can assess how recently it was registered and how it's configured?”
Audit mail security policy before campaign
“Before we send our next email campaign from acmecorp.com, can you check its SPF, DKIM, and DMARC records to make sure our mail policy is properly configured?”
Monitor competitor domain infrastructure
“Pull the full DNS and subdomain breakdown for rival-startup.io — I want to see what nameservers they use, their TLS cert details, and any subdomains that are publicly visible.”
Technical details
Endpoint
POSThttps://dns.halowerk.com/domain/articles/ns-desec?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need comprehensive, multi-signal domain intelligence in a single call without API key signup — especially useful for ad-hoc security investigations, domain audits, or automated enrichment pipelines. The optional baseline parameter enables change-detection use cases by comparing current records against a previously observed snapshot. Prefer this over single-purpose WHOIS or DNS tools when you need WHOIS + DNS + mail policy + TLS + subdomains all at once. The pay-per-call x402 micropayment model makes it ideal for low-volume or bursty agent workflows with no subscription overhead.
Side effects
- Domain not found or unresolvable — returns empty or error response
- WHOIS data unavailable for certain TLDs or privacy-protected registrations
- Payment fails or x402 authorization not accepted — request rejected before processing
- Rate limiting or upstream DNS resolver failures cause partial results
- Malformed domain input (exceeds 253 chars or invalid format) — validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domain | string | |
| baseline | object |
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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