# DNS A Record Lookup for redis Subdomain

> DNS A Record Lookup for redis 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 A record of redis.<domain> via Cloudflare DoH and reports whether the host exists, its IP addresses, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/redis/a?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-a-record-lookup-for-redis-subdomain-04e41d4e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DT4zRDRNdNbbR7cHxcaF0

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-redis-subdomain-04e41d4e
```

Example prompt: Can you check if redis.acme.com exists in DNS — specifically look up the A record for the redis subdomain under acme.com and tell me what IP it resolves to and what the TTL is?

## When to prefer this

Use this endpoint when you need a quick, single-shot check on whether a redis subdomain exists under a specific domain and what IP it resolves to — without enumerating all subdomains. Ideal for security audits, infrastructure verification, or pre-connection checks in automated pipelines. Prefer this over general DNS tools when you want a paid, reliable, low-latency Cloudflare DoH-backed lookup specifically for the common 'redis' host pattern.

## Known failure modes

- Domain does not exist — returns NXDOMAIN or equivalent non-existence result
- No redis subdomain present — returns empty or negative result
- Invalid domain format — may return an error or empty response
- Cloudflare DoH outage — lookup may fail or timeout
- Network timeout — transient failure, retry may succeed

## How this service works

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

## Output

Returns whether the redis.<domain> A record exists, the resolved IPv4 address(es), and the TTL value. If the host does not exist, it reports a non-existence result. The response is sourced from 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-redis-subdomain-04e41d4e/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)