Connecting a subdomain from a third-party provider to your Squarespace site requires just a few technical steps. Here's how to do it properly:

Before Starting

• You need a registered domain with full DNS services
• Set up the subdomain with your provider first
• You don't need to connect the main domain before connecting the subdomain

Step-by-Step Connection Process:

1. In Squarespace:

• Go to [Domains] panel
• Click [Use Your Domain]
• Enter your subdomain name
• Click [Continue], then [Connect from Provider]
• Select [Other] from the dropdown
• Click [Connect Domain] and [OK]
• Keep the DNS Settings panel open

2. Add First CNAME Record in Your Domain Provider:

• Host: Copy unique verification code from Squarespace
• Type: CNAME
• Points To: verify.squarespace.com

3. Add Second CNAME Record:

• Host: Your subdomain (e.g., "blog")
• Type: CNAME
• Points To: ext-cust.squarespace.com

4. Complete Connection:

• Return to Squarespace
• Click [Update Records]
• Wait 24-72 hours for connection
• Turn off "Use WWW Prefix" in domain settings if using as primary domain

Troubleshooting Tips:

• If CNAME records aren't supported, use TXT records instead
• Remove any conflicting A records
• Check DNS settings if you see "Cannot verify domain ownership"
• Use the DNS checker tool in Squarespace for verification

Common Issues:

• Connection can take up to 72 hours
• The CNAME for www may show "record not found" (this is normal)
• Some providers may require a period (".") after the verification code

For additional help, contact your domain provider or consult Squarespace support for specific setup instructions for your provider.

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