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Updating your old CNAME records for security

If you received an email about an incorrect CNAME in your domain, it means your domain settings are outdated and you need to update your records. If you don't make these changes, your domain could disconnect. The domain we emailed you about was purchased from a third-party provider and connected to your Squarespace site.

This guide walks you through the steps to update your CNAME record. If you're not comfortable making these changes yourself, we've included some advice on how to reach out to your provider for help.

Why do I need to make these changes?

If you received this email, your third-party domain is using outdated DNS records.

In October 2014, we upgraded these records to keep domain connections more secure. Though your domain is probably leading to your site right now, you need to switch to these newer records by following this guide, or your domain could disconnect without notice. If this happens, visitors will see an error message and won’t be able to access your site.

Tip: If you just connected a domain and it's not working, double-check your domain mapping records instead.

Change your own CNAME record

To edit your CNAME:

  1. Log into your account with your domain provider.
  2. Find the DNS settings for your domain.
  3. Look for any CNAME records pointing to www.squarespace.com
  4. Delete that data, and replace it with ext-cust.squarespace.com
  5. Save your changes. Note that your settings may take up to 72 hours to fully update.

If you can’t edit your existing record, try deleting the incorrect CNAME and add a new, correct CNAME record:

  1. Log into your account with your domain provider.
  2. Find the DNS settings for your domain.
  3. Delete any CNAME records pointing to www.squarespace.com
  4. Add a new record in your DNS settings with the following values:
  • Alias or Host Name: www
  • Type or Record Type: CNAME or CNAME alias
  • Points To: ext-cust.squarespace.com
  1. Save your changes. Note that your settings may take up to 72 hours to fully update.
Note: If you’re using Squarespace 5, follow the same instructions above, but update the incorrect CNAME data so it points to ext5-cust.squarespace.com.

Ask your provider for help

If you can’t access your domain’s settings, or you don’t feel comfortable making these changes on your own, contact your domain provider and ask for their help. They're more familiar with how their settings work and can look into your domain setup directly. 

Copy and paste this sample message into an email, or use it as a guide for your live chat or phone conversation: 

Sample message:

Squarespace recommends that I update a CNAME record in my domain, enter your domain name here, so it’s properly connected to my Squarespace site.

To do this, I need to remove any CNAMEs pointing to www.squarespace.com and replace them with the record below. Can you help me with this process?

Here are the values:

If you’re using Squarespace 7, provide these values:

  • Record Type: CNAME
  • Alias or Host Name: www
  • Points To: ext-cust.squarespace.com

If you’re using Squarespace 5, provide these values:

  • Record Type: CNAME
  • Alias or Host Name: www
  • Points To: ext5-cust.squarespace.com

Transfer your domain to Squarespace (optional)

If you don’t want to manage your domain through a third-party provider anymore, you can transfer it to Squarespace if it’s eligible.

Learn more about the differences between transferring and connecting.

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Updating your old CNAME records for security