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Domain OSINT, TLS Certificate & Security Headers Recon
Domain OSINT, TLS Certificate & Security Headers Recon is a paid API for AI agents from x402broker.com, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Performs live DNS resolution (IPv4/IPv6), TLS certificate inspection (issuer, expiry), and HTTP security header grading for a given domain.
Price / call$0.01
Success—
StatusUnknown
How this service works
Inspects live IPv4/IPv6 DNS resolution, TLS certificate issuer/expiry, and HTTP security grade. (Live x402 v2, IETF MPP & MCP endpoint at https://x402broker.com/v1/whois-lookup)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata including issuer and expiration date, and an HTTP security header assessment with a security grade for the queried domain.
Example use cases
Pre-launch security audit for a new site
“Before we go live, can you check openai.com's TLS certificate issuer and expiry, DNS resolution, and HTTP security headers so I can confirm the security setup looks solid?”
Monitoring competitor domain security posture
“Pull the full security recon on stripe.com — I want to see their IPv4/IPv6 DNS records, who issued their TLS cert and when it expires, and their HTTP security grade.”
Investigating a suspicious domain
“I received an email from payments-secure-verify.com and it looks sketchy — can you run a full DNS, TLS certificate, and security headers check on it so I can see what's actually behind it?”
Technical details
Endpoint
GEThttps://x402broker.com/v1/whois-lookup?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, unified OSINT snapshot of a domain's infrastructure — combining DNS resolution, TLS certificate health, and HTTP security posture in a single call. Prefer it over manual lookups or separate tools when investigating domain trustworthiness, auditing security configurations, or enriching B2B lead data with infrastructure signals.
Side effects
- Domain does not exist or has no DNS records — returns empty or error response
- Domain is unreachable and TLS handshake fails — TLS fields may be null or missing
- Invalid domain format provided — validation error returned
- Domain blocks automated inspection tools — partial results returned
- Network timeout when probing live endpoints — may return incomplete data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domainrequired | string | Target domain name (e.g. anthropic.com, openai.com) for DNS, TLS certificate, and security header OSINT |
Output
Schema · Response
{
"type": "object"
}Reviews
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