# DNS TXT Record Lookup for owa Subdomain via Cloudflare DoH

> DNS TXT Record Lookup for owa Subdomain via 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 2026-10-22).

Looks up the TXT DNS records for the owa.<domain> subdomain using Cloudflare DNS over HTTPS and returns whether the host exists, its TXT records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/owa/txt?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-txt-record-lookup-for-owa-subdomain-via-cloudflare-doh-2436ea75
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pywufzBqxWQpIqGI1ZEeE

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-txt-record-lookup-for-owa-subdomain-via-cloudflare-doh-2436ea75
```

Example prompt: Can you check whether the owa subdomain exists for contoso.com and show me its TXT records and TTL?

## When to prefer this

Choose this endpoint when you specifically need to check for the presence and TXT records of the owa subdomain (commonly used for Microsoft Outlook Web Access / Exchange) under a given domain, without enumerating other subdomains. Prefer it over general DNS TXT lookups when the target subdomain is specifically 'owa', and over full subdomain enumeration tools when you only need a targeted existence check for this well-known host.

## Known failure modes

- Domain does not exist — NXDOMAIN response returned with no records
- owa subdomain exists but has no TXT records — empty record set with NOERROR
- Malformed or missing domain input — request rejected or invalid response
- Cloudflare DoH resolver temporarily unavailable — service error or timeout
- Rate limiting or payment failure — request not processed

## How this service works

TXT record of owa.<domain>: looks up the owa host under the domain you give (TXT 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> subdomain exists in DNS, along with any TXT records associated with it, the TTL value, and the DNS response code — all as answered by Cloudflare's 1.1.1.1 DNS over HTTPS resolver.

## 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-txt-record-lookup-for-owa-subdomain-via-cloudflare-doh-2436ea75/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)