# DNS CNAME Lookup for internal Subdomain

> DNS CNAME Lookup for internal 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 2026-10-20).

Resolves the CNAME record for the 'internal' subdomain of a given domain via Cloudflare DoH, returning existence status, records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/internal/cname?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-cname-lookup-for-internal-subdomain-84687924
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pBwy8GMrGhwLUG4Lw0UKP

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-internal-subdomain-84687924
```

Example prompt: Can you check whether internal.acme.com has a CNAME record — I want to know if it exists and what it resolves to?

## When to prefer this

Use this endpoint when you need a quick, cheap ($0.01) existence check specifically for the 'internal' subdomain CNAME record of a known domain, without running a full subdomain enumeration. Ideal for infrastructure validation, pre-deployment checks, or auditing DNS hygiene on a per-domain basis.

## Known failure modes

- Domain not found or no CNAME record present — returns non-existence status
- Malformed domain input — query fails or returns error
- Cloudflare DoH upstream timeout — lookup may fail or return partial data
- Rate limiting or payment failure — 402 or rejection response

## How this service works

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

## Output

Returns whether internal.<domain> exists as a CNAME record, the actual CNAME target(s), the DNS TTL value, and any associated record data retrieved via Cloudflare DoH.

## 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-internal-subdomain-84687924/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)