# DNS A Record Lookup for m.<domain> Subdomain via Cloudflare DoH

> DNS A Record Lookup for m.<domain> 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 A (IPv4 address) record for the 'm' 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/m/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-m-domain-subdomain-via-cloudflare-doh-cc900409
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fntnqY8iuEduCScVG02xP

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-m-domain-subdomain-via-cloudflare-doh-cc900409
```

Example prompt: Can you check if the domain rallylive.ca has an active 'm' subdomain — like m.rallylive.ca — and tell me what IP address it resolves to and its TTL?

## When to prefer this

Use this endpoint when you need a quick, targeted existence and resolution check specifically for the 'm' subdomain (commonly used for mobile sites) of a given domain, without triggering full subdomain enumeration. Prefer this over general DNS A-record lookups when the specific host of interest is 'm' and you want Cloudflare DoH resolution. It is pay-per-use at $0.01 USDC, making it cost-effective for spot checks.

## Known failure modes

- Domain does not exist (NXDOMAIN) — returns non-existence status
- m subdomain not configured — returns no records found
- Invalid domain format provided — may return error or empty result
- Cloudflare DoH upstream timeout — may result in delayed or failed response
- Network connectivity issue to dns.intel.rallylive.ca — endpoint unavailable

## How this service works

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

## Output

Returns whether the m.<domain> A record exists, the resolved IPv4 address(es), the TTL in seconds, and the DNS response code. If the subdomain does not exist, indicates its absence without enumerating other 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-a-record-lookup-for-m-domain-subdomain-via-cloudflare-doh-cc900409/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)