Wildcard subdomains on Azure

Question

I'm trying to get an Azure site set up so that it will handle all (wildcard) subdomains, and not require any manual addition of a CNAME record every time a new customer signs up and chooses a subdomain like xyz.mysite.com

I'm following this guide: https://blogs.msdn.microsoft.com/waws/2015/12/01/mapping-a-wildcard-domain-name-to-an-azure-app-services-web-app-website/

I'm temporarily using a the domain www.joburger.co.za

I've created the A, CNAME & TXT records on the domain (did them all to be sure). In Azure, I've added the hostname www.joburger.co.za and it works.

In Azure, I can also add another hostname for a subdomain, like test.joburger.co.za, and it works too.

But if I don't add a hostname in Azure, then it doesn't work.

How do I get Azure to handle the wildcards without having to manually add the hostnames each time?

Answer 1

In your domain manager make sure you have...

• CNAME * entry that points to yourapp.azurewebsites.net
• CNAME awverify entry that points to awverify.yourapp.azurewebsites.net

Then in Azure, go to your App Service > Custom Domains and add a hostname *.yourdomain.com. This validates that the hostname is valid and if everything's good you can add the new wild card entry to your hostnames list.

Answer 2

Check this if it helps to add wild card domain.
https://azure.microsoft.com/en-in/blog/azure-websites-and-wildcard-domains/