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Enter a CNAME for Your Subdomain

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

CNAMEs can only be set for subdomains that are registered with 1&1. It is recommended that you read the Explanation of CNAMEs first.

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

Step 1
Log in to your 1&1 Control Panel
Step 2
Click Manage Domains from the Domains panel.
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 (such as a subdomain) may take 1 hour until the changes are recognized by all servers/computers on the Internet.