---
title: "What are subdomains in Binder?"
description: "Defining subdomain with Binder"
url: https://help.binder.so/en/articles/48-what-are-subdomains-in-binder
collection: "FAQ"
updated: 2026-08-22
language: en
---

# What are subdomains in Binder?

Defining subdomain with Binder

Subdomains in Binder are personalized URLs linked to your account (e.g., [**yourcompany.binder.so**](http://yourcompany.binder.io)). They help maintain a professional appearance and branding when sharing documents or creating data rooms. Remember that using subdomains means that your primary domain remains [**binder.so**](http://binder.io). If you prefer to use your custom domain instead of [**binder.so**](http://binder.io), you can easily set one up.

  
Here is a guide on how to setup custom Domains with Binder, [click here](https://help.binder.so/en/articles/21-custom-domain.md)