# DNS A Record Lookup for OWA Subdomain

> DNS A Record Lookup for OWA 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 A record (IPv4 address) for the owa.<domain> subdomain using Cloudflare DNS over HTTPS and returns existence status, records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/owa/a?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-a-record-lookup-for-owa-subdomain-c016ee23
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eJUgaufAuEsWL7GTWcqW7

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-owa-subdomain-c016ee23
```

Example prompt: Can you check whether owa.contoso.com exists in DNS — I want to know if that domain has an Outlook Web Access host set up and what IP it resolves to.

## When to prefer this

Use this endpoint when you need a fast, targeted check for the presence and IPv4 address of the OWA (Outlook Web Access) subdomain specifically, without enumerating all subdomains. Prefer it over general DNS tools when you only care about the owa host and want a lightweight, pay-per-lookup DNS check via Cloudflare DoH.

## Known failure modes

- NXDOMAIN response when owa subdomain does not exist for the given domain
- Invalid or malformed domain name input returns an error
- Network or DoH resolver timeout
- Domain exists but owa host has no A record (may have CNAME or other record types instead)

## How this service works

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

## Output

Returns whether the owa.<domain> A record exists, the resolved IPv4 address(es), the TTL value, and the DNS response code (e.g. NOERROR or NXDOMAIN), as answered 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-a-record-lookup-for-owa-subdomain-c016ee23/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)