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dns-a-docs-subdomain
x402
dns-a-docs-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 2026-10-19).
Looks up the A record for docs.<domain> via Cloudflare DNS-over-HTTPS and reports whether the host exists, its IP addresses, and TTL.
Price / call$0.01
Success—
StatusUnknown
How this service works
A record of docs.<domain>: looks up the docs 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 docs without enumerating subdomains. $0.01 per lookup.
Output
Returns whether the docs.<domain> host exists as a DNS A record, its resolved IPv4 address(es), and the TTL of the record. If the host does not exist, indicates absence of the record.
Example use cases
Documentation site existence check
“Does docs.notion.so exist as a real host? I want to know if Notion has a docs subdomain set up and what IP it points to.”
Competitor documentation infrastructure check
“Check whether docs.linear.app resolves — I want to know if they have a dedicated documentation host and what its A record looks like.”
Onboarding integration verification
“I'm integrating with Acme Corp's API — can you verify that docs.acmecorp.com actually resolves to an IP so I know their documentation site is live?”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/dns/host/docs/a?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need the IPv4 A record for the docs subdomain of a given domain, such as verifying a documentation site is live, checking hosting infrastructure, or enriching domain intelligence data. Prefer this over full subdomain enumeration tools when you only need the quick existence check for docs.<domain> specifically.
Side effects
- Domain does not have a docs subdomain — returns no records found
- Invalid or malformed domain input — lookup may fail or return error
- Cloudflare DoH upstream timeout or outage — temporary lookup failure
- Domain exists but docs subdomain is only configured as CNAME (not A) — no A record returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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