# DNS AAAA Record Lookup for blog Subdomain (Cloudflare DoH)

> DNS AAAA Record Lookup for blog Subdomain (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 IPv6 (AAAA) DNS record for the blog 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/blog/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-blog-subdomain-cloudflare-doh-c3b0a617
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cKzoN7v0lcTiMLfP4i-FQ

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-blog-subdomain-cloudflare-doh-c3b0a617
```

Example prompt: Can you check if blog.example.com has an IPv6 address set up in DNS — I want to know if that subdomain exists and what its AAAA record and TTL are?

## When to prefer this

Choose this endpoint when you need a targeted, single-hop check for whether a specific common host (blog) has IPv6 DNS presence, without needing to enumerate all subdomains. Prefer over generic DNS tools when you want a fast, paid, reliable Cloudflare DoH-backed lookup with clear existence signaling for the blog host specifically.

## Known failure modes

- NXDOMAIN response if blog subdomain does not exist
- Empty records array if no AAAA record is set but subdomain exists with other record types
- Invalid or malformed domain input may cause error response
- DNS resolution timeout if Cloudflare DoH is unreachable
- Domain with no DNS delegation returns servfail-equivalent response

## How this service works

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

## Output

Returns whether the blog.<domain> AAAA record exists, the IPv6 address records if present, the TTL value, and the DNS response code (e.g. NOERROR or NXDOMAIN). Useful for quickly confirming IPv6 presence without enumerating all subdomains.

## 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-blog-subdomain-cloudflare-doh-c3b0a617/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)