# dns-cname-secure-subdomain

> dns-cname-secure-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 2026-10-19).

Looks up the CNAME record for the 'secure' subdomain of a given domain via Cloudflare DNS-over-HTTPS and reports existence, records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/secure/cname?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-cname-secure-subdomain-6efb2488
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_X6uPrBQPqmpyZMKnA1rjl

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-secure-subdomain-6efb2488
```

Example prompt: Check if secure.example.com has a CNAME record — I want to know what it points to and what the TTL is.

## When to prefer this

Use this endpoint when you need a quick, targeted check on whether the 'secure' subdomain of a specific domain is configured as a CNAME record, without running a full subdomain enumeration. Ideal for infrastructure auditing, pre-deployment validation, or competitive research where you specifically need the CNAME record for the 'secure' host. Prefer over generic DNS tools when you want a single-call, pay-per-use lookup resolved via Cloudflare DoH for reliability.

## Known failure modes

- Domain does not have a 'secure' subdomain CNAME — returns NXDOMAIN or empty record set
- Invalid or malformed domain name input — may return error or empty result
- Cloudflare DoH unreachable — service-level error
- Rate limiting or payment failure for the $0.01 per lookup fee

## How this service works

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

## Output

Returns whether the CNAME record for secure.<domain> exists, the CNAME target hostname(s) it points to, the TTL value, and the DNS response code. If the record does not exist, reports non-existence accordingly.

## 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-secure-subdomain-6efb2488/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)