# dns-aaaa-secure-subdomain

> dns-aaaa-secure-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 IPv6 (AAAA) DNS record for the 'secure' subdomain of a given domain via Cloudflare DoH, reporting existence, records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/secure/aaaa?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-aaaa-secure-subdomain-dd792ffe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lir5tOTujmEvAd4vfWqbc

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-aaaa-secure-subdomain-dd792ffe
```

Example prompt: Can you check if secure.acmecorp.com has an IPv6 DNS record — does it exist and what does the AAAA record say?

## When to prefer this

Use this endpoint when you need a fast, single-purpose IPv6 DNS existence check specifically for the 'secure' subdomain of a domain, without needing to enumerate all subdomains or resolve other record types. Ideal for infrastructure audits, deployment pre-checks, or verifying IPv6 reachability of a known common host pattern.

## Known failure modes

- Domain not found or NXDOMAIN — returns no records with existence flag false
- Malformed domain input — may return an error or empty result
- Upstream Cloudflare DoH unavailable — request times out or fails
- Domain has no AAAA record for 'secure' subdomain — returns empty record set
- Payment not processed — 402 response blocking the lookup

## How this service works

AAAA record of secure.<domain>: looks up the secure host under the domain you give (AAAA via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like secure without enumerating subdomains. $0.01 per lookup.

## Output

Returns whether the 'secure.<domain>' AAAA record exists, the IPv6 address(es) in the record, and the associated TTL value. If the record does not exist, the response indicates non-existence.

## 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-aaaa-secure-subdomain-dd792ffe/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)