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dns-a-demo-subdomain
x402
dns-a-demo-subdomain is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).
Looks up the A record for the 'demo' subdomain of a given domain via Cloudflare DoH and reports its existence, IP addresses, and TTL.
Price / call$0.01
Success—
StatusUnknown
How this service works
A record of demo.<domain>: looks up the demo host under the domain you give (A via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like demo without enumerating subdomains. $0.01 per lookup.
Output
Returns whether the 'demo' subdomain A record exists for the given domain, along with the resolved IPv4 address(es) and the DNS TTL value. If the record does not exist, reports non-existence. Data is fetched fresh via Cloudflare DNS over HTTPS.
Example use cases
Verify demo environment is live
“Check whether demo.startupxyz.io has a valid A record in DNS — I want to confirm the demo subdomain is pointing somewhere before we send customers to it.”
Pre-launch DNS readiness check
“Before we go live, can you confirm that demo.mybrand.com resolves to an IP address? Tell me the IP and how long the TTL is set for.”
Audit competitor demo subdomains
“Does demo.competitorsite.com actually exist in DNS? I want to know if they have a live demo subdomain and what IP it points to.”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/dns/host/demo/a?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, cheap ($0.01) existence and resolution check specifically for the 'demo' subdomain of a domain, without enumerating all subdomains. Ideal for pre-launch checks, monitoring whether a demo environment is DNS-live, or auditing whether a specific domain exposes a demo host. Prefer this over generic DNS tools when you want a focused single-host check with built-in Cloudflare DoH reliability.
Side effects
- Domain does not exist (NXDOMAIN) — returns non-existence result
- demo subdomain has no A record but domain itself exists — returns empty/not-found
- Network timeout reaching Cloudflare DoH — may return error
- Invalid or malformed domain input — may return error or unexpected result
- SERVFAIL from upstream DNS — returns error response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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