# DNS CNAME Lookup for forum Subdomain

> DNS CNAME Lookup for forum 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).

Looks up the CNAME record for the forum subdomain of a given domain using Cloudflare DNS over HTTPS, returning existence status, records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/forum/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-forum-subdomain-2a6cd5b9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jmylsyUbK66qlQA0NpiYj

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-forum-subdomain-2a6cd5b9
```

Example prompt: Can you check if there's a CNAME record set up for the forum subdomain of discourse.org — I want to know if forum.discourse.org exists in DNS and what it points to.

## When to prefer this

Use this endpoint when you need a quick, single-purpose existence check for the forum subdomain of a given domain without enumerating all subdomains. Prefer this over general DNS tools when you specifically need CNAME resolution for forum.<domain> via Cloudflare DoH and want a pay-per-lookup model at $0.01 per call.

## Known failure modes

- Domain does not have a forum CNAME record — returns not-found or empty result
- Invalid or malformed domain name input — may return an error or no records
- DNS resolution timeout from Cloudflare DoH — transient failure
- Non-existent top-level domain — returns NXDOMAIN

## How this service works

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

## Output

Returns whether the forum.<domain> CNAME record exists, the CNAME target host it points to, the TTL value, and the full DNS response details as answered by 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-forum-subdomain-2a6cd5b9/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)