# DNS AAAA Record Lookup for api.<domain> Subdomain

> DNS AAAA Record Lookup for api.<domain> 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 2026-10-21).

Looks up the AAAA (IPv6) DNS record for the api.<domain> subdomain via Cloudflare DNS over HTTPS and returns whether it exists, its records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/api/aaaa?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-aaaa-record-lookup-for-api-domain-subdomain-86cceb86
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YHkjuHPnTRrQsx0q_lMmh

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-aaaa-record-lookup-for-api-domain-subdomain-86cceb86
```

Example prompt: Check if api.stripe.com has an AAAA record — I want to know if their API host is reachable over IPv6 and what the TTL is.

## When to prefer this

Use this endpoint when you need a quick, targeted IPv6 DNS existence check specifically for the 'api' subdomain of a domain, without enumerating all subdomains. Prefer this over general DNS tools when you want a hosted, pay-per-use, Cloudflare-backed AAAA lookup for the api host specifically — especially useful in automated infrastructure reconnaissance or integration validation workflows.

## Known failure modes

- Domain does not exist — NXDOMAIN response returned
- api subdomain exists but has no AAAA record — empty record set returned
- Invalid or malformed domain input causes a query error
- Cloudflare DoH upstream temporarily unavailable, causing a timeout or error response
- Rate limiting or payment failure if the x402 payment is not completed

## How this service works

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

## Output

Returns whether the api.<domain> subdomain has an AAAA record, the IPv6 address(es) if present, the TTL value, and the DNS response code — all resolved 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-aaaa-record-lookup-for-api-domain-subdomain-86cceb86/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)