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Create domain aliasing in 123FormBuilder

You can create a domain alias for the 123FormBuilder domain URL if you are a Platinum user or higher. It’s commonly referred to as domain aliasing (or domain mapping). This way, the form link you share with users will contain your own custom domain and no reference to the 123FormBuilder form builder.

In order to set up a domain alias, you first need to create a subdomain on your own domain. Then you will need to add new CNAME records to your DNS.

Once you set up your subdomain, all you need to do is to contact us and specify which subdomain you would like to use on your forms. (e.g

After the procedure is done on our end, you will receive two CNAME records (one for the subdomain, and another one representing an SSL certificate). Set up your subdomain to point to the two CNAME records in order to establish the connection.

Finally, go to your form’s Publish → Link → Options section, tick on Use your domain, and enter the subdomain.

Domain aliasing in 123FormBuilder

The subdomain is now active. The form URL has been replaced with the domain alias in all of the publishing options and it is secured. Copy/paste the form code normally. Your subdomain will be used instead of our domain name from now on.

Important Notes

  • CNAME records require time to propagate. The propagation time depends on your hosting service. It can take up to 2 days.
  • The SSL certificate is provided by us, free of charge.


  1. Where is the “Get code & publish” section on 123FormBuilder? I am a Platinum user, and am not finding that on my dashboard or in any of my forms

    1. Hello Bob,
      In your account, in My Forms section right next to the Dashboard, when you click Edit on any form you want to publish, the editor opens up and you have 5 sections in the top left corner: Edit, Settings, Publish, Submissions, Reports.
      In the Publish section you can find the code and use it to publish your forms on your web site.
      If you need further assistance on this matter please contact us at

  2. HI,
    My domain aliasing doesn’t seem to be working. It has been over 48 hours. I have triple checked everything, and it is all the same. I set the CNAME record up for and and I have copied the into the Domain Aliasing section of 123 forms. What am I doing wrong?

  3. Hello.
    If I have a certificate SSL with a custom domain, I gess I can integrate all the security to my forms throuht 123 fomrs.Am I Right?

      1. hi.
        i don’t have a domain and not willing to buy now. my question is may i have my brand name instead of 123contact form on the link address? if yes, how? when i tried that, i received the message that page can’t found.

        the second question is if the first option is not available, how can i have a link of my event page on facebook ?

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Frequently Asked Questions

Here is a list of the most frequently asked questions. For more FAQs, please browse through the  FAQs page.

Is this service free?
Yes, we offer a free form builder service. Just sign up to the Basic plan and you are all set. This plan is forever free, but you are limited with a few features only, such as 5 forms per account, 100 submissions per month and you have to keep the backlink to 123FormBuilder on your forms. Check out our features matrix for more information.
How many forms can I create?
It depends on the service plan you are on. Higher service plans enable more features, including more web forms for your account. If you need more forms, go to the My Account section of your account and click the upgrade button. To create an unlimited number of forms, either upgrade to the Platinum service plan or higher. Consult our features matrix for more information.
How can I publish my forms?
You can publish your forms in many ways, by using their direct URL or HTML link, embedding them with a JavaScript code, Inline HTML or iFrame, using the Facebook app or the WordPress plugin, using popups, the Blogger code snippet and many more. Once you have created and customized your form, go to the Publish section to complete your work. Read more in our documentation.
How do I change my form design?
You can change the design of your form for more information. in the Themes section, which is located in your form settings. We offer a set of more than 30 predefined form themes for your forms, but you can also create your own from scratch. You can customize the submit button, the logo and more. To apply your own stylesheets, all forms come with a custom CSS editor.

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