# dns-cname-ftp-subdomain

> dns-cname-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 CNAME record of ftp.<domain> via Cloudflare DNS over HTTPS and reports whether it exists, along with its records and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/ftp/cname?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-cname-ftp-subdomain-eeee77e4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JUIB6Jp4uBYJbp5KggrhS

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-cname-ftp-subdomain-eeee77e4
```

Example prompt: Can you check if ftp.example.com exists by looking up its CNAME record via Cloudflare DoH?

## When to prefer this

Use this endpoint when you need a quick, targeted check for whether a domain has an ftp subdomain configured as a CNAME, without running a full subdomain enumeration. Prefer this over general DNS tools when you specifically need the CNAME record type for ftp hosts and want a paid, reliable, metered lookup via Cloudflare DoH.

## Known failure modes

- Domain does not have an ftp subdomain CNAME record — returns non-existence result
- Invalid or malformed domain name input — may return DNS error or no result
- Cloudflare DoH upstream failure — service may be temporarily unavailable
- Network timeout reaching Cloudflare resolver — request may fail or hang
- Domain exists but ftp subdomain has A/AAAA records instead of CNAME — CNAME query returns empty

## How this service works

CNAME record of ftp.<domain>: looks up the ftp host under the domain you give (CNAME 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 ftp.<domain> CNAME record exists, the DNS record data (CNAME target), the TTL, and the DNS response code. If the record does not exist, the response indicates its absence.

## 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-cname-ftp-subdomain-eeee77e4/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)