next.js/docs/01-app/03-api-reference/05-config/01-next-config-js/allowedDevOrigins.mdx

---
title: allowedDevOrigins
description: Use `allowedDevOrigins` to configure additional origins that can request the dev server.
---

{/* The content of this doc is shared between the app and pages router. You can use the `<PagesOnly>Content</PagesOnly>` component to add content that is specific to the Pages Router. Any shared content should not be wrapped in a component. */}

Next.js does not automatically block cross-origin requests during development, but will block by default in a future major version of Next.js to prevent unauthorized requesting of internal assets/endpoints that are available in development mode.

To configure a Next.js application to allow requests from origins other than the hostname the server was initialized with (`localhost` by default) you can use the `allowedDevOrigins` config option.

`allowedDevOrigins` allows you to set additional origins that can be used in development mode. For example, to use `local-origin.dev` instead of only `localhost`, open `next.config.js` and add the `allowedDevOrigins` config:

```js filename="next.config.js"
module.exports = {
  allowedDevOrigins: ['local-origin.dev', '*.local-origin.dev'],
}
```