Domain Aliasing

You can create a domain alias for the 123ContactForm 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 domain name and no reference to 123ContactForm. In order to set up a domain alias, you need to create a subdomain on your own domain and to add a new CNAME record to your DNS. Also, you need to be on the Platinum or Diamond service plan.

Here are step-by-step instructions on how to create a domain alias and enable it:

  • Create a subdomain on your domain, e.g.
  • Add a new CNAME record to your server DNS. The change normally takes effect in several days.
    For example:
    using domain aliasing with 123ContactForm web forms
    (Please copy the line above exactly as it is, with all of the dots. Replace only with your own subdomain.)
  • Go to your 123ContactForm Get Code & Publish section and tick the checkbox Enabled in the Domain Aliasing subsection at page top.
  • In the domain mapping customization lightbox, type the subdomain that you will use as an alias, the one set up at the previous steps. Press Save.

Domain Aliasing

Domain aliasing is now active. The form URL has been replaced with the alias in all of the publishing options. Copy/paste the form code normally. The domain alias will be used instead of our domain name.Domain Aliasing

Related documentation:
Do domain aliasing and SSL encryption work together?


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?

May 26, 2016 01:30

    Hello Nerida,

    We are sorry you are experiencing this.

    Our Tech Support Specialists will be more than happy to help you if you contact them either through Live Chat or by emailing them at

    May 27, 2016 10:16
Naji Boutros

Does it have to be a sub-domain? Couldn’t I purchase a domain name and us that instead?

April 20, 2015 10:56
    Olivian Stoica

    Hello Naji!

    Yes, you can purchase a domain name and use that for your online form.

    For further assistance, don’t hesitate to contact our Support Team at or via our contact form.


    April 21, 2015 10:40

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?

November 23, 2014 06:55
    Olivian Stoica

    Hello Javier!

    Please follow our documentation on how do domain aliasing and SSL encryption work together.

    For questions or assistance, please don’t hesitate to contact us at or via our contact form. Our Support Team will gladly help.


    November 24, 2014 07:10
      Sharareh Zainalian

      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 ?

      March 27, 2016 12:44

      Hi Sharareh!

      I’m afraid that’s not possible unless you have your own domain.

      April 04, 2016 08:14

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