# Regions

This is a read-only reference endpoint. It returns the available regions where OptiTech programs can be hosted, with each region's ID and display name.

All regions are in Sweden and the EU, under EU ownership. Use the `region_id` from this response when creating a program. Region is set at creation and cannot be changed.

See [Data centers](/docs/introduction/regions) for availability and data residency considerations.

---

> API Reference / Regions / List supported regions

## GET /regions

Lists supported OptiTech regions.

**Note:** Not all regions are available to all organizations. Pass the `org_id`
parameter to get an accurate list of regions available to your organization.


### Parameters

- `org_id` (string, query, optional)
  Organization ID. When provided, returns only regions available to this organization.
  Recommended for accurate region availability.
  

### Response (200)

```json
{
  "regions": [
    {
      "region_id": "aws-us-east-2",
      "name": "AWS US East 2 (Ohio)",
      "default": false,
      "geo_lat": "39.96",
      "geo_long": "-83"
    },
    {
      "region_id": "azure-eastus2",
      "name": "Azure East US 2 (Virginia)",
      "default": false,
      "geo_lat": "36.66",
      "geo_long": "-78.38"
    },
    {
      "region_id": "aws-us-east-1",
      "name": "AWS US East 1 (N. Virginia)",
      "default": true,
      "geo_lat": "38.13",
      "geo_long": "-78.45"
    },
    {
      "region_id": "azure-westus3",
      "name": "Azure West US 3 (Arizona)",
      "default": false,
      "geo_lat": "33.45",
      "geo_long": "-112.07"
    },
    {
      "region_id": "azure-gwc",
      "name": "Azure Germany West Central (Frankfurt)",
      "default": false,
      "geo_lat": "50.11",
      "geo_long": "8.68"
    },
    {
      "region_id": "aws-us-west-2",
      "name": "AWS US West 2 (Oregon)",
      "default": false,
      "geo_lat": "46.15",
      "geo_long": "-123.88"
    },
    {
      "region_id": "aws-eu-central-1",
      "name": "AWS Europe Central 1 (Frankfurt)",
      "default": false,
      "geo_lat": "50",
      "geo_long": "8"
    },
    {
      "region_id": "aws-eu-west-2",
      "name": "AWS Europe West 2 (London)",
      "default": false,
      "geo_lat": "51.5",
      "geo_long": "0.12"
    },
    {
      "region_id": "aws-ap-southeast-1",
      "name": "AWS Asia Pacific 1 (Singapore)",
      "default": false,
      "geo_lat": "1.37",
      "geo_long": "103.8"
    },
    {
      "region_id": "aws-ap-southeast-2",
      "name": "AWS Asia Pacific 2 (Sydney)",
      "default": false,
      "geo_lat": "-33.85",
      "geo_long": "151.2"
    },
    {
      "region_id": "aws-sa-east-1",
      "name": "AWS South America East 1 (São Paulo)",
      "default": false,
      "geo_lat": "-23.49",
      "geo_long": "-46.81"
    }
  ]
}
```

### Code examples

```bash
curl "https://api.optitech.com/v1/regions" \
  -H "Authorization: Bearer $OPTITECH_API_KEY"
```

```typescript
import { createOptiTechClient, raw } from '@optitech/sdk';

const optitech = createOptiTechClient({ apiKey: process.env.OPTITECH_API_KEY });
const { data } = await raw.getActiveRegions({
  client: optitech.client
});
```

### Errors

**default**
General Error.

The request may or may not be safe to retry, depending on the HTTP method, response status code,
and whether a response was received.

- If no response is returned from the API, a network error or timeout likely occurred.
- In some cases, the request may have reached the server and been successfully processed, but the response failed to reach the client. As a result, retrying non-idempotent requests can lead to unintended results.

The following HTTP methods are considered non-idempotent: `POST`, `PATCH`, `DELETE`, and `PUT`. Retrying these methods is generally **not safe**.
The following methods are considered idempotent: `GET`, `HEAD`, and `OPTIONS`. Retrying these methods is **safe** in the event of a network error or timeout.

Any request that returns a `503 Service Unavailable` response is always safe to retry.

Any request that returns a `423 Locked` response is safe to retry. `423 Locked` indicates that the resource is temporarily locked, for example, due to another operation in progress.

- `request_id` (string, optional)
  Unique identifier for the request, useful for debugging.
  You can set this value manually by including an `X-Request-ID` header in the request. If not provided, the value will be generated automatically.
  
- `code` (string, required)
  Default: ``
- `message` (string, required)
  Error message