# DNS TXT Record Lookup for ftp Subdomain via Cloudflare DoH

> DNS TXT Record Lookup for ftp 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 TXT DNS records for the ftp.<domain> subdomain using Cloudflare DNS over HTTPS and returns existence status, records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/ftp/txt?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-txt-record-lookup-for-ftp-subdomain-via-cloudflare-doh-d81223a9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_s1SmDAX7EPJydMF4We1sd

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-txt-record-lookup-for-ftp-subdomain-via-cloudflare-doh-d81223a9
```

Example prompt: Can you check if ftp.example.com has any TXT DNS records — I want to know if the ftp subdomain exists and what records are set on it?

## When to prefer this

Use this endpoint when you need a fast, targeted existence check for the ftp subdomain of a specific domain without enumerating all subdomains, and specifically want TXT records resolved via Cloudflare's 1.1.1.1 DoH resolver for reliability and privacy.

## Known failure modes

- Domain not found — no TXT records exist for ftp.<domain>, returns empty or NXDOMAIN response
- Invalid or malformed domain input causes lookup failure
- Cloudflare DoH resolver temporarily unavailable
- Rate limiting or payment failure at $0.01 per call

## How this service works

TXT record of ftp.<domain>: looks up the ftp host under the domain you give (TXT 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> subdomain exists, its TXT record values, and the TTL of those records 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-txt-record-lookup-for-ftp-subdomain-via-cloudflare-doh-d81223a9/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)