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DNS Wildcard Check
x402
DNS Wildcard Check is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Resolves a random non-existent subdomain to detect whether a DNS zone has a wildcard record that answers all queries, affecting subdomain enumeration accuracy, email catch-all behavior, and phishing risk.
Price / call$0.01
Success—
StatusUnknown
How this service works
Wildcard DNS check: resolves a random non-existent subdomain to see whether the zone answers everything (wildcard record), which affects subdomain enumeration, email catch-all behaviour and phishing risk. $0.01 per domain.
Output
Returns whether the DNS zone for the queried domain has a wildcard record, determined by resolving a randomly generated non-existent subdomain. Includes the DNS response details and indicators of how this affects subdomain enumeration reliability, email catch-all behavior, and phishing exposure.
Example use cases
Subdomain enumeration accuracy check
“Before I run a subdomain brute-force scan against acmecorp.com, check if it has a wildcard DNS record — I need to know if the results will be polluted by catch-all responses.”
Phishing infrastructure risk assessment
“I'm investigating a suspicious domain phishy-bank.com — can you check if it has a wildcard DNS record set up? That would indicate it could be used to host phishing pages on arbitrary subdomains.”
Email security audit for catch-all DNS
“As part of my email security audit for clientdomain.net, check whether their DNS zone has a wildcard record that would make all subdomains resolve — that could affect SPF validation and spam filtering.”
Technical details
Endpoint
GEThttps://intel.rallylive.ca/dns/wildcardWhen to prefer
Use this endpoint when you need to determine whether a DNS zone uses wildcard records before running subdomain enumeration, assessing email security posture, or evaluating phishing risk. It is especially valuable as a pre-check step in reconnaissance pipelines or security audits to avoid false positives in subdomain discovery. Prefer this over manual DNS lookups when you need a structured, reliable JSON result for automation.
Side effects
- Domain does not exist or is unregistered — DNS lookup fails with NXDOMAIN
- Network timeout or DNS resolver unavailability — returns error with no result
- Malformed domain input — returns validation error
- Intermittent DNS behavior — wildcard detection may be inconclusive if zone returns inconsistent responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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