# DNS CNAME Lookup for jenkins Subdomain via Cloudflare DoH

> DNS CNAME Lookup for jenkins Subdomain via Cloudflare DoH 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).

Checks whether a CNAME record exists for the jenkins subdomain of a given domain using Cloudflare DNS over HTTPS, returning the record data and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/jenkins/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-jenkins-subdomain-via-cloudflare-doh-eadbe020
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6Nghd8qeH17nDCsvcILLx

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-jenkins-subdomain-via-cloudflare-doh-eadbe020
```

Example prompt: Can you check if jenkins.rallylive.ca has a CNAME record set up — I want to know if that subdomain exists in DNS and what it points to.

## When to prefer this

Use this endpoint when you need a fast, targeted existence check for the jenkins subdomain specifically on a given domain without enumerating all subdomains. Prefer this over general DNS lookup tools when you want a simple paid-per-call microservice that uses Cloudflare DoH for reliable, filtered DNS resolution and you only care about CNAME records for the jenkins host.

## Known failure modes

- Domain not found — NXDOMAIN response when jenkins subdomain does not exist
- Invalid domain input — malformed domain string causes query failure
- Cloudflare DoH unreachable — upstream resolver timeout or error
- No CNAME record type — subdomain may exist as A/AAAA but not CNAME, returning empty CNAME result

## How this service works

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

## Output

Returns whether a CNAME record exists for jenkins.<domain>, the CNAME target value if present, the TTL, and the DNS response code (e.g. NOERROR or NXDOMAIN).

## 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-jenkins-subdomain-via-cloudflare-doh-eadbe020/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)