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Enter a CNAME Record for a Subdomain

The following steps will teach you how to enter a CNAME record for your subdomain.

If using a subdomain, all DNS settings configured through the 1&1 Control Panel will be discarded. A subdomain can be thought of as a kind of pointer for DNS. Instead of specifying DNS settings for a domain in the 1&1 Control Panel, using a subdomain indicates that the DNS settings for the domain should be exactly the same as the DNS settings for the subdomain address.

Step 1
Log in to your 1&1 Control Panel and select the relevant package.
Step 2
From the Domains panel, click on Manage Domains.
Domains > Manage Domains
Domains > Manage Domains

Step 3
Locate the domain that contains the subdomain you want to modify and then click Manage Subdomains. Domain Center home page
Domain Center home page
Step 4
Check the box next to the subdomain to select it. Then click Edit DNS Settings from the Subdomain Settings drop-down menu. Subdomain Overview
Subdomain Overview
Step 5
  • Select the CNAME option. (A)
  • Enter the CNAME address in the Alias text box (The CNAME cannot exceed 250 characters). (B)
  • Check the box to acknowledge that you are aware all current DNS settings will be disabled by using a CNAME instead. (C)
  • Click the Save button to continue.
IP Addresses section
IP Addresses section
Please note:
All DNS changes, though live on the 1&1 Server within minutes, may take up to 1 hour to be fully updated and recognised by all servers/computers on the Internet. If you are using your own name server, it will take 72 hours.
For additional information, you may want to reference: