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lang: en
title: 'API docs: express.expressserver.rooturl'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/strongloop/loopback-next/tree/master/packages/express
permalink: /doc/en/lb4/apidocs.express.expressserver.rooturl.html
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[Home](./index.md) > [@loopback/express](./express.md) > [ExpressServer](./express.expressserver.md) > [rootUrl](./express.expressserver.rooturl.md)
## ExpressServer.rootUrl property
The root url for the server without the basePath. For example, the value will be 'http://localhost:3000' regardless of the `basePath`<!-- -->.
<b>Signature:</b>
```typescript
get rootUrl(): string | undefined;
```