This help center supports the Legacy platform Dudamobile. As of April 1st, 2019 new sites cannot be created, existing sites will remain live with the same functionality and editor access.

Email support and phone support (for Duda customers on Team plans and above) will be available until September 30th, 2019. Self service customer support will remain.

It’s a Great Time to Go Responsive! - Responsive design is the best way to create engaging online experiences on today’s web. With that in mind, we encourage you to take this as an opportunity to replace your old desktop-only websites and their mobile friendly counterparts with new responsive sites that will work seamlessly across desktop, tablet and mobile.

Set up a CNAME record with 1and1


To create a custom mobile subdomain on 1and1 you'll need to create a new CNAME record.  Follow the steps below.


  1. Go to and login to your account.
  2. In your account, click on the Domains tab.
  3. Under "My Domain", click on Manage domains.
  4. Find your domain, then click Create Subdomain.
  5. In the "Create Subdomain" field, enter "m" (just the letter). Then click Create Subdomain.
    Note: If you get an error stating "This subdomain is not available", it means that subdomain was created already and you can skip this step.
  6. Click on the Domains tab to go back to Domain Center, then click Manage Subdomains.
  7. Scroll down to Subdomain Overview, then find your mobile subdomain ( and click on it.
  8. Scroll down to the DNS Settings section and click on it to expand. Then click Edit.
  9. In the next page, scroll down to A/AAAA Records (IP Addresses), then click CNAME.
  10. In the Alias field, enter:
  11. Check the box that says "I am aware and accept that all current DNS settings, e-mail addresses and redirects will be disabled", then click Save.
  12. Hit Save one more time when the box pops up, and you're done!

Other Resources:

You might be looking to set-up your automatic mobile redirection with your 1and1 site builder. Please view our instructions article on it here.


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