---
title: Access Durable Object jurisdiction via `ctx.id.jurisdiction`
description: Read the jurisdiction of a Durable Object from within the object itself.
image: https://edgetunnel-b2h.pages.dev/changelog-preview.png
---

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## Access Durable Object jurisdiction via \`ctx.id.jurisdiction\`

Mar 26, 2026 

[ Durable Objects ](https://edgetunnel-b2h.pages.dev/durable-objects/)[ Workers ](https://edgetunnel-b2h.pages.dev/workers/) 

`ctx.id.jurisdiction` inside a Durable Object now reports the [jurisdiction](https://edgetunnel-b2h.pages.dev/durable-objects/reference/data-location/#restrict-durable-objects-to-a-jurisdiction) the object was created in — for example `"eu"` when accessed through `env.MY_DURABLE_OBJECT.jurisdiction("eu")` — so you can make region-aware decisions without passing the jurisdiction through method arguments or persisting it in storage. For the full list of ID-construction paths that preserve `jurisdiction`, refer to the [Durable Object ID documentation](https://edgetunnel-b2h.pages.dev/durable-objects/api/id/#jurisdiction).

**JavaScript**

```js
export class RegionalRoom extends DurableObject {
  async fetch(request) {
    // "eu" when accessed through env.MY_DURABLE_OBJECT.jurisdiction("eu")
    const region = this.ctx.id.jurisdiction;
    return new Response(`Hello from ${region ?? "the default region"}!`);
  }
}


// Worker
export default {
  async fetch(request, env) {
    const stub = env.MY_DURABLE_OBJECT.jurisdiction("eu").getByName("general");
    return stub.fetch(request);
  },
};
```

`ctx.id.jurisdiction` is `undefined` for Durable Objects that were not created in a jurisdiction-restricted namespace. Alarms scheduled before 2026-03-15 also do not have `jurisdiction` stored; to backfill the value, reschedule the alarm from a `fetch()` or RPC handler.

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```