Built-in domains

false

Built-in domains

Last updated February 13, 2026 21:12

Every Squarespace site and parking page comes with a built-in domain (also known as a Squarespace URL) that looks like this:

yoursiteid.squarespace.com

We automatically create your site ID (the first part of the built-in domain) using two randomly generated words, and sometimes a random string of characters.  You can change your site ID at any time.

Watch a video

Where your built-in domain appears

You'll always see your built-in domain in your browser address bar when you're logged in, even if you have a custom domain. When you register, transfer, or connect a custom domain to your site, visitors accessing your site with that custom domain will see it in their browser address bars instead of your built-in domain.

However, even after adding a custom domain, visitors who are familiar with how Squarespace works can still see your built-in domain on your site’s login screen or in its source code.

Built-in domain vs. custom domain

Your built-in domain is the unique URL that we automatically assign to you. It always ends in .squarespace.com.

A custom domain is an address you choose for your site, like yourdomain.com. If you use a custom domain, it displays to visitors instead of your built-in domain. If you don’t already have a custom domain, you can register one through Squarespace.

Note: Your built-in domain won't redirect to your custom domain. If you have a custom domain, but a visitor accesses your site from your built-in domain, the built-in domain will display in the browser bar.

Find your built-in domain

If you contact us for help, we might ask for your built-in domain to help troubleshoot your site. If you're logged into your site, you can copy and paste it from the browser address bar. Copy every part of the URL before “/config.”

an example Squarespace built in domain is highlighted in the url bar or browser bar

Change your built-in domain

Before changing your domain name, keep the following limitations in mind:

  • A built-in domain can have between 3 and 30 characters. Keep in mind that shorter domain names are easier to remember.
  • A built-in domain can only have letters, numbers, and hyphens, but it can't end in a hyphen. You can't add symbols (like $ or *) or special characters (like ü, é, or ñ).
  • All built-in domains must begin with a letter.
  • It's not possible to change the built-domain on a parking page or an Acuity Scheduling subscription.

To edit your site ID and built-in domain:

  1. Open the Domains panel .
  2. Under Built-In Domain, click the domain.
  3. Enter a new Site ID. This becomes the first part of your built-in domain before the .squarespace.com.
  4. Click Save. If this Site ID is taken, you'll see an error message. If you'd like to re-use a built-in domain that's already in use on one of your removed sites, contact Customer Support.

the save button and the field where you enter a new site ID are highlighted on the edit site ID screen

  1. Your built-in domain will change and you’ll receive an email with the subject “Your Updated Squarespace URL” for your records.

Was this article helpful?

Yes No

517 out of 1128 found this helpful

Yes No

Built-in domains