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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).
Performs comprehensive domain intelligence gathering — WHOIS, DNS records, mail policy, TLS certificate, and subdomains — for a given domain, with pay-per-call USDC billing 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
A comprehensive domain intelligence report containing: WHOIS registration data, resolved DNS records (A, AAAA, MX, NS, TXT, CAA, SOA), mail security policy (SPF, DKIM, DMARC), TLS/SSL certificate details, and discovered subdomains. When a baseline is provided, the response can highlight changes relative to that baseline.
Example use cases
Investigate suspicious phishing domain
“I got a suspicious email claiming to be from paypa1.com — can you dig into that domain and show me its WHOIS registration, DNS records, TLS certificate, and mail policy so I can tell if it's a spoofing operation?”
Pre-acquisition domain due diligence
“We're thinking about acquiring the domain acmecorp.io — can you pull a full report on it including who owns it, what DNS records are set up, its TLS cert, and any subdomains that are already live?”
Detect DNS changes since baseline
“Compare the current DNS records for mybusiness.com against this baseline I observed last week — records: ['ns1.example.com','ns2.example.com'], observed_at: '2025-06-01T00:00:00Z' — and flag anything that has changed.”
Technical details
Endpoint
POSThttps://dns.halowerk.com/domain/articles/ns-vercara-ultradns?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a one-shot, no-signup domain intelligence report combining WHOIS, DNS, TLS, mail policy, and subdomains in a single call — especially useful for agents operating without pre-registered API keys. It is ideal for security research, due diligence, and DNS change monitoring. Prefer alternatives if you need real-time continuous monitoring, bulk batch processing of many domains at once, or deep passive DNS history.
Side effects
- Domain not found or unresolvable — returns empty or error result
- Invalid domain format exceeding 253 characters — schema validation failure
- WHOIS data unavailable for certain TLDs or privacy-protected registrations
- TLS certificate absent if domain has no HTTPS endpoint
- Rate limiting or payment failure via x402 protocol
- Subdomain enumeration may be incomplete for domains with large or private zone data
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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