## GET /api/v2/domains/{id}/dyndns

**List DynDNS configurations**

Return dynamic DNS configurations for a domain. Tokens are returned only when the caller has write:domains; read-only callers receive token: null and disabled mutation gates. DynDNS is available only when the domain uses HostUp-managed DNS nameservers.

### Related Endpoints

- `POST /api/v2/domains/{id}/dyndns`: Create a DynDNS configuration
- `PATCH /api/v2/domains/{id}/dyndns/{configId}`: Enable or disable DynDNS
- `DELETE /api/v2/domains/{id}/dyndns/{configId}`: Delete a DynDNS configuration

### Headers

- `Accept`: application/json
- `Authorization`: Bearer YOUR_API_KEY
- Required API scope: `read:domains`

### Parameters

- `id` (path, string, required): Public domain ID. Get it from GET /api/v2/domains `data[].id`. Do not invent this value; use the exact ID returned by the referenced API response. Example: `dom_01hxa3b4c5d6e7f8g9h0j1k2m3`

### Request Example

```bash
curl -X GET "https://cloud.hostup.se/api/v2/domains/dom_01hxa3b4c5d6e7f8g9h0j1k2m3/dyndns" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Accept: application/json"
```

### Response Schema

- `available` (boolean, required) Example: `true`
- `reason` (string | null, required)
- `configs` (array<object>, required)
- `configs[].id` (string, required) Example: `ddns_01hxa3b4c5d6e7f8g9h0j1k2m3`
- `configs[].hostname` (string, required) Example: `home.example.com`
- `configs[].recordType` (string, required) Example: `A`
  Allowed values: A, AAAA
- `configs[].token` (string | null, required) Example: `0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef`
- `configs[].lastIp` (string | null, required) Example: `203.0.113.45`
- `configs[].lastUpdatedAt` (string | null, required) Example: `2026-04-27T12:00:00.000Z`
- `configs[].updateCount` (integer, required) Example: `12`
- `configs[].enabled` (boolean, required) Example: `true`
- `configs[].createdAt` (string | null, required) Example: `2026-04-20T08:00:00.000Z`
- `configs[].updatedAt` (string | null, required) Example: `2026-04-27T12:00:00.000Z`
- `actions` (object, required)
- `actions.canManage` (object, required)
- `actions.canManage.allowed` (boolean, required) Example: `true`
- `actions.canManage.reason` (string | null, required)
- `actions.canEnable` (object, required)
- `actions.canEnable.allowed` (boolean, required) Example: `true`
- `actions.canEnable.reason` (string | null, required)
- `actions.canUpdateToken` (object, required)
- `actions.canUpdateToken.allowed` (boolean, required) Example: `true`
- `actions.canUpdateToken.reason` (string | null, required)

### Responses

#### 200 - DynDNS availability, configs, and action gates.
```json
{
  "available": true,
  "reason": null,
  "configs": [
    {
      "id": "ddns_01hxa3b4c5d6e7f8g9h0j1k2m3",
      "hostname": "home.example.com",
      "recordType": "A",
      "token": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
      "lastIp": "203.0.113.45",
      "lastUpdatedAt": "2026-04-27T12:00:00.000Z",
      "updateCount": 12,
      "enabled": true,
      "createdAt": "2026-04-20T08:00:00.000Z",
      "updatedAt": "2026-04-27T12:00:00.000Z"
    }
  ],
  "actions": {
    "canManage": {
      "allowed": true,
      "reason": null
    },
    "canEnable": {
      "allowed": true,
      "reason": null
    },
    "canUpdateToken": {
      "allowed": true,
      "reason": null
    }
  }
}
```

#### 400 - Invalid request. The response body is an RFC 7807 Problem Details document.
```json
{
  "type": "https://developer.hostup.se/errors/invalid_request",
  "title": "Invalid request",
  "status": 400,
  "detail": "The request body failed validation.",
  "code": "invalid_request",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z",
  "errors": [
    {
      "pointer": "/items/0/domainName",
      "detail": "`domainName` is required.",
      "code": "invalid_request"
    }
  ]
}
```

#### 401 - Unauthorized. Authentication is required.
```json
{
  "type": "https://developer.hostup.se/errors/unauthorized",
  "title": "Unauthorized",
  "status": 401,
  "detail": "Authentication is required.",
  "code": "unauthorized",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```

#### 403 - Forbidden. The caller lacks a required scope or does not own the resource.
```json
{
  "type": "https://developer.hostup.se/errors/forbidden",
  "title": "Forbidden",
  "status": 403,
  "detail": "The caller lacks a required scope or does not own the resource.",
  "code": "forbidden",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```

#### 404 - Not found. The resource does not exist or is not owned by the caller.
```json
{
  "type": "https://developer.hostup.se/errors/not_found",
  "title": "Not found",
  "status": 404,
  "detail": "The requested resource could not be found.",
  "code": "not_found",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```

#### 429 - Rate limited. Retry after the limit resets. 429 responses include `Retry-After` seconds plus `X-RateLimit-*` headers.
```json
{
  "type": "https://developer.hostup.se/errors/rate_limit_exceeded",
  "title": "Too many requests",
  "status": 429,
  "detail": "Too many requests. Retry after the limit resets.",
  "code": "rate_limit_exceeded",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```

#### 500 - Internal error. Retry later or contact support if the issue persists.
```json
{
  "type": "https://developer.hostup.se/errors/internal_error",
  "title": "Internal server error",
  "status": 500,
  "detail": "An unexpected error occurred. Retry later or contact support if the issue persists.",
  "code": "internal_error",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```