Linking a domain name in Azure App Service

Rebu Thomas 6

I have an app service in azure portal. I want to access it using my domain name (eg: xxx.mydomain.com). I have tried using custom domain option(CNAME & TXT), but its showing error verifying domain ownership. Any help is appreciable..

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1 answer

!Daniel Bradley 1,071 Reputation points MVP

2022-12-16T11:53:43.57+00:00

Hi @Rebu Thomas

Have you followed the steps carefully in https://learn.microsoft.com/en-us/azure/app-service/app-service-web-tutorial-custom-domain?tabs=a%2Cazurecli

A wildcard domain you should use a CNAME record with ***** in the name field in your DNS provider.
A subdomain you should use a CNAME record.
A root domain you should use an A record.

Also bear in mind DNS propagation. You could use a public lookup tool like MXToolbox or NSLOOKUP in the command line to verify.

Kind regards
Daniel
https://ourcloudnetwork.com
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Rebu Thomas 6 Reputation points

2022-12-16T12:28:20.53+00:00

Hi Daniel,
Thanks for the prompt reply. I had double checked the records entered in my dns provider site.
But still I get the error "Validation failed because the expected DNS records are not found", when validating the domain.
Regards,
Rebu Thomas

!Daniel Bradley 1,071 Reputation points MVP

2022-12-16T13:50:21.52+00:00

Can you provide a screenshot of your records? you can blur part of the full domain.

Same with the Azure portal please?

Rebu Thomas 6 Reputation points

2022-12-20T05:30:17.243+00:00

Hi Daniel,
Screenshots of azure portal custom domain and dns provider site attached.
Regards,
Rebu Thomas

Rebu Thomas 6 Reputation points

2022-12-22T10:44:10.173+00:00

Hi Daniel,

I have attached the screenshots of records in my previous post. Kindly check if there is any error/mismatch.

Thanks in advance !!!

Regards,
Rebu Thomas

!Daniel Bradley 1,071 Reputation points MVP

2022-12-22T14:33:38.887+00:00

Can you run the following NSLOOKUP commands in your Command Prompt please:

nslookup -type=txt asuid.www.yourdomain.com

nslookup -type=cname www.yourdomain.com

Do you see the expected results as per what you have entered in your name servers?

If you do not, ensure you are updating the correct name servers:

nslookup -type=ns www.yourdomain.com
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