# DNS AAAA Record Lookup for pop3 Subdomain

> DNS AAAA Record Lookup for pop3 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 pop3 subdomain of a given domain using Cloudflare DNS over HTTPS, returning existence status, records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/pop3/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-pop3-subdomain-1b85465e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_r6tSoLThaPnlXZyCPUvFN

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-pop3-subdomain-1b85465e
```

Example prompt: Can you check whether pop3.example.com has an IPv6 address configured in DNS — I want to know if that subdomain exists and what its AAAA record and TTL look like?

## When to prefer this

Use this endpoint when you specifically need to check the IPv6 (AAAA) DNS record for the pop3 subdomain of a domain — ideal for email infrastructure audits, IPv6 readiness checks, or quickly verifying whether a POP3 mail host exists without doing full subdomain enumeration. Prefer this over generic DNS tools when you want a targeted, single-host check resolved via Cloudflare's trusted DoH resolver.

## Known failure modes

- Domain does not exist — NXDOMAIN response returned with no records
- pop3 subdomain not configured — NOERROR but empty answer section
- Invalid or malformed domain input — request may fail or return an error
- Cloudflare DoH upstream timeout or unavailability — lookup may time out
- Domain has only A (IPv4) records, not AAAA — response will show no AAAA records

## How this service works

AAAA record of pop3.<domain>: looks up the pop3 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 pop3 without enumerating subdomains. $0.01 per lookup.

## Output

Returns whether the pop3.<domain> AAAA record exists, the IPv6 address(es) in the record, the TTL value, and the DNS response code (e.g. NOERROR, NXDOMAIN) as resolved by 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-record-lookup-for-pop3-subdomain-1b85465e/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)