# Check Domain

> Check whether a domain is available and what it costs.

Requires an API key with the `read` scope.

## Query Parameters

<ParamField query="domain" type="string" required>
  The full domain, for example `yourbrand-mail.com`. Up to 253 characters.
</ParamField>

## Response

<ResponseField name="data" type="object">
  Availability.

  <Expandable title="data">
    <ResponseField name="domain" type="string">The domain you asked about, lowercased.</ResponseField>
    <ResponseField name="available" type="boolean">Whether it can be registered.</ResponseField>
    <ResponseField name="banned" type="boolean">Whether the registrar refuses it.</ResponseField>
    <ResponseField name="priceCents" type="integer">Registration price in US cents, or `null` when it cannot be bought.</ResponseField>
    <ResponseField name="renewalPriceCents" type="integer">Renewal price in US cents, or `null`.</ResponseField>
  </Expandable>
</ResponseField>

<RequestExample>
```bash cURL
curl -X GET "https://api.foxreach.io/api/v1/managed-inboxes/domains/check?domain=yourbrand-mail.com" \
  -H "X-API-Key: otr_your_key"
```

```python Python SDK (beta)
from foxreach import FoxReach

client = FoxReach(api_key="otr_your_key")
result = client.managed_inboxes.check_domain("yourbrand-mail.com")
```

```typescript TypeScript SDK (beta)
import { FoxReach } from "foxreach";

const client = new FoxReach({ apiKey: "otr_your_key" });
const result = await client.managedInboxes.checkDomain("yourbrand-mail.com");
```
</RequestExample>

<ResponseExample>
```json
{
  "data": {
    "domain": "yourbrand-mail.com",
    "available": true,
    "banned": false,
    "priceCents": 1400,
    "renewalPriceCents": 1800
  }
}
```
</ResponseExample>

## Errors

| Status | Description |
|--------|-------------|
| `401` | Missing, invalid, revoked or expired API key |
| `403` | API key does not have the required scope: `read` |
| `400` | `Enter a domain like yourbrand-mail.com` when the value is not a valid domain |
| `404` | Not found while managed mailboxes are switched off on this environment (`{"detail": "Not found"}`) |
| `422` | `domain` is missing |
| `502` | `Domain check is unavailable right now. Try again in a minute.` when the registrar lookup fails |

## Rate Limit

- **100 requests per minute, per API key.** Fixed 60-second window.
- Every response includes `X-RateLimit-Limit`, `X-RateLimit-Remaining`, and `X-RateLimit-Reset` (unix epoch seconds).
- A `429` response includes a `Retry-After` header (seconds until the bucket resets).

For client-side patterns (`Retry-After`, exponential backoff, monitoring `X-RateLimit-Remaining`), see [Rate Limiting](/rate-limiting).