# DNS CNAME Lookup for ci Subdomain

> DNS CNAME Lookup for ci 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 ci.<domain> subdomain via Cloudflare DNS over HTTPS and reports its existence, records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/ci/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-ci-subdomain-7226e6fa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_URjY5dqBmBsQiD7cyMu0S

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-ci-subdomain-7226e6fa
```

Example prompt: Can you check if the domain github.com has a ci subdomain configured in DNS — specifically look up the CNAME record for ci.github.com and tell me what it points to and its TTL?

## When to prefer this

Use this endpoint when you need a quick, targeted existence check for the ci subdomain specifically, without enumerating all subdomains. Ideal for infrastructure discovery, DevOps pipeline verification, or competitive tech stack research where you want to know if a domain uses a dedicated CI host. Prefer this over generic DNS tools when you want a lightweight $0.01 per-query check scoped to the ci host via a reliable DoH resolver.

## Known failure modes

- Domain does not exist — returns NXDOMAIN or no records found
- ci subdomain has no CNAME record (may have A/AAAA instead) — returns empty or NOERROR with no answer
- Invalid domain format — query may fail or return error
- Cloudflare DoH temporarily unavailable — upstream DNS resolution fails
- Network timeout reaching Cloudflare DoH endpoint

## How this service works

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

## Output

Returns whether the ci.<domain> CNAME record exists, the CNAME target(s) it resolves to, and the TTL value of the record as answered by Cloudflare DoH. Includes the DNS response code indicating success or non-existence.

## 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-ci-subdomain-7226e6fa/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)