# dns-cname-beta-subdomain

> dns-cname-beta-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 beta.<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/beta/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-beta-subdomain-b7afc090
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GTF2qVkvxZSU4ijVTL0B8

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-beta-subdomain-b7afc090
```

Example prompt: Can you check if beta.rallylive.ca has a CNAME record configured — I want to know if the beta subdomain exists and what it points to?

## When to prefer this

Use this endpoint when you need a quick, targeted check for whether a beta subdomain CNAME record exists under a given domain without running a full subdomain enumeration. It is ideal for pre-deployment validation, infrastructure audits, and checking whether a domain has a staging/beta environment configured, leveraging Cloudflare's reliable DoH resolver.

## Known failure modes

- Domain does not exist — NXDOMAIN response with no records
- beta subdomain has no CNAME record (may have A or other record types instead)
- Invalid domain format causes lookup failure
- Cloudflare DoH upstream timeout or unavailability
- Payment failure prevents lookup from being executed

## How this service works

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

## Output

Returns whether the CNAME record for beta.<domain> exists, the actual CNAME target record(s), the TTL value, and the DNS response code (e.g. NOERROR or NXDOMAIN), 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-beta-subdomain-b7afc090/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)