# DNS AAAA Record Lookup for img Subdomain (Cloudflare DoH)

> DNS AAAA Record Lookup for img Subdomain (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 IPv6 AAAA DNS record for the img.<domain> subdomain using Cloudflare DNS over HTTPS, returning existence status, records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/img/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-record-lookup-for-img-subdomain-cloudflare-doh-99736c03
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_K2kj29NFM45r4x4CcrNZV

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-record-lookup-for-img-subdomain-cloudflare-doh-99736c03
```

Example prompt: Can you check if img.cloudflare.com has an IPv6 AAAA DNS record and tell me what it resolves to and its TTL?

## When to prefer this

Use this endpoint when you specifically need to check whether the img subdomain of a given domain has an IPv6 (AAAA) DNS record without enumerating all subdomains. Prefer this over generic AAAA lookup endpoints when targeting the standard image-hosting subdomain pattern. Ideal for quick infrastructure reconnaissance, IPv6 readiness checks, or pre-deployment validation of image CDN configuration.

## Known failure modes

- Domain does not exist — returns NXDOMAIN or no records found
- img subdomain not configured — empty record set returned
- Invalid domain format provided — may return error or empty response
- Cloudflare DoH service temporarily unavailable — request times out or returns error
- Rate limiting or payment failure — request rejected before DNS query is made

## How this service works

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

## Output

Returns whether the img.<domain> AAAA record exists, the IPv6 address(es) in the record, the TTL value, and the raw DNS response from Cloudflare DoH. If the subdomain does not exist, reports non-existence accordingly.

## 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-record-lookup-for-img-subdomain-cloudflare-doh-99736c03/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)