# dns-cname-sandbox-subdomain

> dns-cname-sandbox-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 2026-10-22).

Looks up the CNAME record for sandbox.<domain> via Cloudflare DoH and reports existence, records, and TTL

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/sandbox/cname?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-cname-sandbox-subdomain-bcd02754
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VMm13JFVFNyuK4zbWUnAw

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-sandbox-subdomain-bcd02754
```

Example prompt: Can you check if sandbox.acmecorp.com exists as a CNAME record and tell me what it points to and its TTL?

## When to prefer this

Use this endpoint when you need a quick, targeted existence check specifically for the 'sandbox' subdomain of a given domain without doing broad subdomain enumeration. Prefer it over general DNS tools when you only care about this specific common hostname and want CNAME-specific data including TTL via Cloudflare's reliable DoH resolver. It is ideal for pre-deployment checks, partner onboarding, or infrastructure verification workflows.

## Known failure modes

- Domain does not exist — returns non-existent or NXDOMAIN result
- sandbox subdomain has no CNAME record (may have A/AAAA instead) — returns empty or negative result
- Invalid or malformed domain input — may return error or empty response
- Cloudflare DoH unreachable — upstream DNS timeout or failure
- Rate limiting or payment failure — request not processed

## How this service works

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

## Output

Returns whether the sandbox.<domain> CNAME record exists, the record value(s) it points to, the TTL in seconds, and the raw DNS response from Cloudflare DoH. If no record exists, reports absence clearly.

## 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-sandbox-subdomain-bcd02754/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)