# dns-a-autodiscover-subdomain

> dns-a-autodiscover-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 2026-10-22).

Looks up the A record for the autodiscover.<domain> subdomain via Cloudflare DNS over HTTPS and reports existence, IP records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/autodiscover/a?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-a-autodiscover-subdomain-907e65c4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MFXRaY4eS66pBOr6vs2kL

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability dns-a-autodiscover-subdomain-907e65c4
```

Example prompt: Can you check if autodiscover.contoso.com has an A record — I need to know whether the autodiscover host is set up for that domain and what IP it resolves to?

## When to prefer this

Use this endpoint when you need a fast, targeted check of whether the autodiscover subdomain is configured for a specific domain, particularly for email infrastructure validation, client autoconfiguration diagnostics, or onboarding audits. Prefer this over generic DNS tools when you only care about the autodiscover host and want a structured, pre-parsed result without running your own DNS queries.

## Known failure modes

- Domain does not exist — returns NXDOMAIN or no records found
- autodiscover subdomain not configured — returns empty record set
- Cloudflare DoH upstream timeout or error
- Malformed domain input causes query failure
- Domain uses CNAME instead of A record at autodiscover — may return no A record directly

## How this service works

A record of autodiscover.<domain>: looks up the autodiscover 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 autodiscover without enumerating subdomains. $0.01 per lookup.

## Output

Returns whether the autodiscover.<domain> A record exists, the resolved IP address(es), the TTL value, and the DNS response code — allowing the caller to confirm presence, routing, and caching configuration of the autodiscover host.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dns-a-autodiscover-subdomain-907e65c4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dns.intel.rallylive.ca](https://www.zero.xyz/host/dns.intel.rallylive.ca/llms.txt)