Unable to verify domain name in Azure App Services

Serhii Hryniv 21 Reputation points

Hi there, I've add an A record and a TXT record in my DNS provider. All of DNS servers in digwebinterface.com report on my example.tk and asuid.example.tk as existing and available but Azure doesn't verify my custom domain (failed to add hostname example.tk. A TXT record pointing from asuid.example.tk was not found). I've also tried to add an additional TXT record like here https://learn.microsoft.com/en-us/answers/questions/74116/azure-custom-domain-not-verified-because-of-asuid.html but it doesn't work for me. Could it be a bug or something like that?

Azure App Service
Azure App Service
Azure App Service is a service used to create and deploy scalable, mission-critical web apps.
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  1. ajkuma 22,851 Reputation points Microsoft Employee

    Serhii-5295, we’d been waiting for your response. Adding to DavidWarwick-6573 suggestions. I understand it may be late, kindly let us know if you need further assistance.

    I understand you have already verified the DNS records and investigated via Dig. You may double-check/validate the DNS records:

    A. If you haven't done this already, you may leverage App Service diagnostics from Azure Portal> Navigate to your App Service app in the Azure Portal.

    B. In the left navigation, click on Diagnose and solve problems and “Availability and Performance”. Go over the highlighted (screenshot below) options- to see if it provides additional pointers. (screenshot below)

    Validate the DNS records:

    • For root domain (create two records): -A record – [example mytestsite.com] -add an A record (host =@). With app's IP address (copied from App Service WebApp ‘custom domain’ blade). Not recommended to use a CNAME record.
      -TXT record (host =asuid) Yes, as you noted App Service accesses asuid TXT record to verify ownership of the custom domain
    • For sub domain,
      -[example www.mytestsite.com and my.mytestsite.com] – You may add CNAME records.


    Checkout the steps outlined in the doc to fix ‘Domain verification is not working

    Take a look at the detailed step-step instructions on : Map an existing custom DNS name to Azure App Service

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