# DNS CNAME Lookup for sftp Subdomain

> DNS CNAME Lookup for sftp 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 for the sftp.<domain> subdomain via Cloudflare DNS over HTTPS and returns whether it exists, its records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/sftp/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-lookup-for-sftp-subdomain-a401e5e5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_27qS2P63kmjmLq3gw_FtR

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-lookup-for-sftp-subdomain-a401e5e5
```

Example prompt: Can you check if sftp.acme.com has a CNAME record set up — I want to know if there's an sftp host configured for that domain and what it points to.

## When to prefer this

Use this endpoint when you need a quick, targeted check for whether a specific domain has an sftp subdomain configured as a CNAME, without running a full subdomain enumeration. Ideal when you already have the parent domain and just need to confirm sftp host presence and its alias target via a reliable, privacy-respecting DoH resolver.

## Known failure modes

- Domain does not have an sftp CNAME record — returns non-existence response
- Invalid or malformed domain name input — may return error or empty result
- Cloudflare DoH upstream unavailable — lookup fails with DNS resolution error
- Domain TLD not resolvable — no records returned

## How this service works

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

## Output

Returns whether the sftp.<domain> CNAME record exists, the record value(s) it points to, and the 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-cname-lookup-for-sftp-subdomain-a401e5e5/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)