# DNS CNAME Lookup for pay Subdomain

> DNS CNAME Lookup for pay 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).

Checks whether a CNAME record exists for the pay.<domain> host using Cloudflare DNS over HTTPS, returning the record details and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/pay/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-pay-subdomain-4db3d243
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_e2SuDI4bIdd0wATX8Sm0v

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-pay-subdomain-4db3d243
```

Example prompt: Can you check whether pay.stripe.com has a CNAME record set up — I want to know if the pay subdomain exists and what it points to.

## When to prefer this

Use this endpoint when you need a quick, targeted check for the pay.<domain> CNAME record specifically, without enumerating all subdomains. Prefer it over full DNS enumeration tools when you only care about the pay host and want a fast, cheap single lookup via Cloudflare DoH. Ideal for payment infrastructure auditing, competitive research, or validating whether a business has a dedicated payment subdomain configured.

## Known failure modes

- Domain does not have a pay subdomain CNAME — returns not found or empty record set
- Invalid or malformed domain name input causes a resolution error
- Cloudflare DoH resolver temporarily unavailable — upstream timeout or failure
- Domain exists but pay host has an A/AAAA record instead of a CNAME — may return empty CNAME result
- Payment of $0.01 USDC fails or is rejected — endpoint returns 402 Payment Required

## How this service works

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

## Output

Returns whether a CNAME record exists for pay.<domain>, the CNAME target hostname it points to, the TTL value in seconds, and the raw DNS response details from Cloudflare's DNS over HTTPS resolver.

## 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-pay-subdomain-4db3d243/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)