# dns-aaaa-ftp-subdomain

> dns-aaaa-ftp-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 2026-10-21).

Looks up the AAAA (IPv6) DNS record for the ftp subdomain of a given domain via Cloudflare DoH, reporting existence, records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/ftp/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-ftp-subdomain-cc8b700b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_O9urI6OOEfqz8zU4Od0hN

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-ftp-subdomain-cc8b700b
```

Example prompt: Can you check whether ftp.example.com has an IPv6 DNS record (AAAA) set up, and tell me what the record says and its TTL?

## When to prefer this

Use this endpoint when you specifically need to check IPv6 (AAAA) DNS records for the ftp subdomain of a domain, without needing to enumerate all subdomains. Prefer this over general DNS tools when you want a fast, targeted existence check for the ftp host with Cloudflare's DoH resolver and a per-lookup micropayment model.

## Known failure modes

- Domain does not exist — returns non-existent/NXDOMAIN status
- ftp subdomain has no AAAA record — returns empty records with exists=false
- Invalid or malformed domain input — may return error or empty response
- Cloudflare DoH upstream timeout — may return error or no data
- Domain has only A (IPv4) records for ftp, not AAAA — returns no AAAA records found

## How this service works

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

## Output

Returns whether the AAAA record for ftp.<domain> exists, along with the IPv6 address records and their TTL as resolved 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-ftp-subdomain-cc8b700b/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)