## POST /api/v2/domains/bulk/nameservers

**Queue a bulk nameserver update**

Queue an asynchronous nameserver-set update for multiple domains. Send public `dom_...` IDs in `domainIds` and at least two hostnames in `nameservers`. This changes the authoritative nameserver set at the registry; it does not create DNS zone NS records. If a nameserver is a child host under one of the selected domains, create the required glue record first with `POST /api/v2/domains/{id}/glue-records`; otherwise the precheck may return `glue_host_not_registered`. The v2 boundary verifies every submitted domain before queuing, so foreign or invalid IDs reject the whole batch with Problem Details and per-item pointers.

### Related Endpoints

- `POST /api/v2/domains/bulk/dns`: Queue a bulk DNS record operation
- `POST /api/v2/domains/bulk/renew`: Queue bulk domain renewals
- `POST /api/v2/domains/bulk/contacts`: Queue a bulk domain contact update

### Headers

- `Accept`: application/json
- `Authorization`: Bearer YOUR_API_KEY
- Required API scope: `write:domains`
- `Content-Type`: application/json

### Request Body

- `domainIds` (array<string>, required) Example: `["dom_01hxa3b4c5d6e7f8g9h0j1k2m3","dom_01hxa3b4c5d6e7f8g9h0j1k2m4"]`
- `nameservers` (array<string>, required): Authoritative nameserver hostnames. Use `primary.ns.hostup.se` and `secondary.ns.hostup.se` for HostUp-managed DNS. Example: `["primary.ns.hostup.se","secondary.ns.hostup.se"]`

### Request Examples

#### Switch domains to HostUp-managed nameservers

```bash
curl -X POST "https://cloud.hostup.se/api/v2/domains/bulk/nameservers" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Accept: application/json" \
  -H "Content-Type: application/json" \
  -d '{
    "domainIds": [
      "dom_01hxa3b4c5d6e7f8g9h0j1k2m3",
      "dom_01hxa3b4c5d6e7f8g9h0j1k2m4"
    ],
    "nameservers": [
      "primary.ns.hostup.se",
      "secondary.ns.hostup.se"
    ]
  }'
```

```json
{
  "domainIds": [
    "dom_01hxa3b4c5d6e7f8g9h0j1k2m3",
    "dom_01hxa3b4c5d6e7f8g9h0j1k2m4"
  ],
  "nameservers": [
    "primary.ns.hostup.se",
    "secondary.ns.hostup.se"
  ]
}
```

### Response Schema

- `operation` (object, optional)
- `operation.status` (string, required) Example: `queued`
  Allowed values: pending, queued, in_progress, completed, failed
- `operation.jobId` (string, required) Example: `job_01hxa3b4c5d6e7f8g9h0j1k2m3`
- `operation.pollUrl` (string, required) Example: `/api/jobs/job_01hxa3b4c5d6e7f8g9h0j1k2m3`
- `operation.result` (object,null, optional) Example: `null`
- `domainsQueued` (integer,null, optional) Example: `2`

### Responses

#### 202 - Bulk nameserver job queued. Poll `operation.pollUrl` for completion.
```json
{
  "operation": {
    "status": "pending",
    "jobId": "dbj_01hxa3b4c5d6e7f8g9h0j1k2m3",
    "pollUrl": "/api/jobs/dbj_01hxa3b4c5d6e7f8g9h0j1k2m3"
  },
  "domainsQueued": 2
}
```

#### 400 - Validation failed. Nameserver prechecks may include codes such as `glue_host_not_registered`, `invalid_format`, `not_found`, or `dns_resolution_failed` with pointers to `/domainIds/{index}` or `/nameservers`.
```json
{
  "type": "https://developer.hostup.se/errors/invalid_request",
  "title": "Validation failed",
  "status": 400,
  "detail": "The bulk nameserver update request is invalid.",
  "code": "invalid_request",
  "errors": [
    {
      "pointer": "/nameservers",
      "detail": "One or more glue nameserver hosts must be registered before this update can be queued.",
      "code": "glue_host_not_registered"
    }
  ]
}
```

#### 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"
}
```