# DNS AAAA Lookup for assets Subdomain via Cloudflare DoH

> DNS AAAA Lookup for assets Subdomain via Cloudflare DoH is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).

Looks up the AAAA (IPv6) DNS record for the assets.<domain> subdomain using Cloudflare DNS over HTTPS and returns existence status, records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/assets/aaaa?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-aaaa-lookup-for-assets-subdomain-via-cloudflare-doh-0ba6be98
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_M51ms6qeaU9k51UCji9pS

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-lookup-for-assets-subdomain-via-cloudflare-doh-0ba6be98
```

Example prompt: Can you check if assets.shopify.com has an AAAA (IPv6) record configured, and if so, what address and TTL it has?

## When to prefer this

Use this endpoint when you need a quick, targeted IPv6 DNS existence check specifically for the 'assets' subdomain of a given domain, without performing broad subdomain enumeration. Prefer this over generic DNS tools when you want a paid, reliable Cloudflare DoH-backed lookup with a simple per-call cost model and the result scoped to the assets host.

## Known failure modes

- Domain does not exist — returns NXDOMAIN response code with no records
- assets subdomain not configured — NXDOMAIN or empty answer section
- Invalid domain format — request may fail or return error
- Cloudflare DoH upstream timeout or outage — may return error or no response
- Missing required input parameters — API returns validation error

## How this service works

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

## Output

Returns whether the assets.<domain> subdomain exists, its AAAA (IPv6) DNS records if present, the TTL value, and the DNS response code (e.g. NOERROR or NXDOMAIN) as answered by Cloudflare DNS over HTTPS.

## 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-lookup-for-assets-subdomain-via-cloudflare-doh-0ba6be98/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)