# DNS A Record Lookup for store Subdomain via Cloudflare DoH

> DNS A Record Lookup for store 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 2026-10-21).

Looks up the A record (IPv4 address) of the store.<domain> subdomain using Cloudflare DNS over HTTPS and returns whether it exists, its records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/store/a?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-a-record-lookup-for-store-subdomain-via-cloudflare-doh-6d511813
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iageGRzmiBenIJBa7nlxC

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-a-record-lookup-for-store-subdomain-via-cloudflare-doh-6d511813
```

Example prompt: Can you check if store.shopify.com has a DNS A record — I want to know whether that store subdomain actually resolves and what IP it points to?

## When to prefer this

Use this endpoint when you need a quick, targeted existence check for the store subdomain of a given domain without enumerating all subdomains. It is ideal for infrastructure validation, pre-launch DNS checks, or competitive reconnaissance on store hosts specifically. Choose this over general DNS tools when you want a paid, reliable Cloudflare DoH-backed lookup with minimal setup.

## Known failure modes

- Domain does not have a store subdomain — returns NXDOMAIN or empty record set
- Invalid or malformed domain name input causes lookup failure
- Cloudflare DoH upstream timeout or unavailability
- Rate limiting or payment failure for the $0.01 per call fee
- Non-existent TLD or unreachable authoritative nameserver

## How this service works

A record of store.<domain>: looks up the store host under the domain you give (A via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like store without enumerating subdomains. $0.01 per lookup.

## Output

Returns whether the store.<domain> subdomain exists as an A record, the resolved IPv4 address(es), the TTL value, and the DNS response code — all sourced via Cloudflare DNS over HTTPS.

## 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-a-record-lookup-for-store-subdomain-via-cloudflare-doh-6d511813/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)