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Connecting a subdomain to your Squarespace site

A subdomain is an extension of your domain name that forwards to your site. The most common subdomain is "www," as in www.yourdomain.com. If your domain provider supports alternate subdomains, you can also use a subdomain like blog.yourdomain.com, where the subdomain is "blog," to redirect to your site. The process of connecting a domain or subdomain to your site is also called mapping.

Use this guide if you're adding a subdomain to an existing third-party domain. If you registered a domain through Squarespace, or if you transferred a third-party domain to Squarespace, visit Creating a subdomain for your Squarespace Domain instead of following this guide.

Note: All connected subdomains will point to the homepage and lead to your primary domain. It isn't possible to connect a subdomain to a page that isn't your homepage. 

Before you begin

  • You'll need a registered domain to set up a subdomain. You can register a domain with Squarespace, including a free custom domain if you're on the yearly plan. If you prefer to register with a third-party provider, ensure they offer Full DNS services. Examples include GoDaddyNetwork Solutions, or Dotster.
  • Once you register a domain, set up your subdomain with your provider. 
  • You don't need to connect your regular domain to your site to connect a subdomain. For example, you should connect blog.site.com by following this guide, but you don't need to connect site.com first.

Step 1 - Open the Domains panel

In the Home Menu, click Settings, and then click Domains.

You can also press the ? key while any panel is open and search domains.

Step 2 - Link your domain

Click Use a Domain I Own. Enter the subdomain name you’re linking in the Domain Name box, and then click Continue.

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Click Connect From Provider.

Note: If you see a message that says "This domain is already connected to another Squarespace site," check any other Squarespace sites you manage to determine where the subdomain is connected. Then disconnect it from that site. For help logging into the correct site, visit Managing multiple sites.

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Ensure Other is selected in the drop-down menu, and click Connect Domain.

Note: Even if your third-party provider is listed in the drop-down menu, you should still select Other. The customized setup feature is for connecting domains, not subdomains.

After you click Connect Domain, you'll see a message letting you know that the connection to your domain is in progress. Click Okay to continue.

A new panel will open with the records you need to enter in your provider account so your domain connects to Squarespace. Keep this panel open for your reference.

Step 3 - Log into your provider

Log into your domain provider's site, and find where you manage your DNS settings. Depending on your provider, this may be called Zone File Settings, Manage Domains, Domain Manager, DNS Manager, or something similar.

Here, you'll create these records so your domain correctly links to your Squarespace site.

Step 4 - Add the first CNAME record

In the first line of your Domains panel, copy the unique code that appears directly below the Host column. The unique code is a random string of numbers and letters that must point to verify.squarespace.com.

In your provider's DNS manager, create a CNAME with these values:

  • Alias or Host Name - Paste the unique code from the Domains panel (a random string of numbers and letters). Then add a period (".") at the end (with no spaces), followed by your subdomain. For example, if you're connecting blog.yoursite.com, the format should be: verificationcode.blog
  • Type or Record Type - CNAME or CNAME Alias
  • Points To - verify.squarespace.com
Note: If you're experiencing issues verifying your domain with a CNAME Record or if your domain provider doesn't support CNAME Records, verify your domain using a TXT Record.

Step 5 - Add the second CNAME record

In the second line of your Domains panel, www appears directly below the Host column. This is the normal subdomain used for domains, but you'll point your subdomain to ext-cust.squarespace.com instead.

In your provider's DNS manager, create a CNAME with these values:

  • Alias or Host Name - Your subdomain. For example, if you're connecting blog.yoursite.com, the format should be: blog
  • Type or Record Type - CNAME or CNAME Alias
  • Points to - ext-cust.squarespace.com
Note: Your Domains panel may show A records with "Record not found" in the Current Data column. You can ignore these since subdomains only require CNAME records.

Step 6 - Refresh

After changing your records, return to the Squarespace Domains panel, and click Refresh below the records.

The Current Data column in the panel will start to update and show if your records are entered correctly. It can take up to 72 hours for this information to process.

Note: The www CNAME will still display as Record not found, even after the subdomain is connected.

Step 7 - Wait and test

If all records are entered correctly, your subdomain will connect to your site within 24 hours. At times, it can take up to 72 hours. Visit the Domains panel at any time to check your progress.

When the domain is correctly linked, the subdomain will direct to your Squarespace site.

Note: Even if your subdomain directs properly you may not see a Connected label in your subdomain panel. This is normal, as the www prefix isn't recognized for subdomains.

Step 8 - Uncheck Use WWW Prefix

The final step is to disable the "www" prefix from appearing. This is only required if you've set your subdomain as your primary domain.

In the Home Menu, click Settings, and then click Domains. Select the subdomain, and ensure Use WWW Prefix is unchecked.

Troubleshoot with the DNS record checker

If we detect that your records weren’t set up properly, your domain will appear in the Domains panel with the message “Can’t verify domain ownership.”

To troubleshoot, use the DNS checker tool in the Domains panel to see the exact CNAME and A Records to fix with your domain provider. 

Click the domain in the Domains panel, and then click DNS Settings. To learn more, visit Checking your domain mapping records.

Note: While these mapping steps will work for most subdomains, we recommend contacting your domain provider for specific help.
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Connecting a subdomain to your Squarespace site