# dns-aaaa-ns2-subdomain

> dns-aaaa-ns2-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 2026-10-22).

Looks up the AAAA (IPv6) DNS record for the ns2 subdomain of a given domain via Cloudflare DNS-over-HTTPS, returning existence status, records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/ns2/aaaa?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-aaaa-ns2-subdomain-bb134b44
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_M1bOfEb34A43L27YFLLAL

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-ns2-subdomain-bb134b44
```

Example prompt: Can you check if ns2.example.com has an IPv6 AAAA record? I want to know whether the ns2 host exists for that domain and what its TTL is.

## When to prefer this

Use this endpoint when you need a fast, targeted IPv6 existence check specifically for the ns2 host of a domain without doing full subdomain enumeration. Prefer it over general DNS lookup services when you want a single-purpose, pay-per-use check for ns2 AAAA records routed through Cloudflare DoH for reliability and privacy.

## Known failure modes

- Domain does not exist — returns NXDOMAIN or empty record set
- ns2 subdomain has no AAAA record (may have A record instead) — returns empty or NOERROR with no data
- Invalid domain format — request may fail or return error
- Cloudflare DoH temporarily unreachable — upstream resolution failure
- Rate limiting or payment failure — x402 payment not processed

## How this service works

AAAA record of ns2.<domain>: looks up the ns2 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 ns2 without enumerating subdomains. $0.01 per lookup.

## Output

Returns whether ns2.<domain> has an AAAA (IPv6) record, the actual IPv6 address records if they exist, the TTL value, and the DNS response code — all resolved via Cloudflare DoH.

## 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-ns2-subdomain-bb134b44/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)