The server on the domain does not respond. Why?

Question

Django

Created a server on Microsoft Azure. Chose Ubuntu 14.04. Deployed Nginx, Django, Gunicorn, Supervisor. As it came to binding to a domain, problems started. I can not ping on the domain, but when cleaning dns, the site opens. The domain was transferred to pdd.yandex. What could be the problem, please help.

Answer 1

nslookup and check what's going on in the cache, what's going on in your DNS in your head, what's going on in the Yandex or Google DNS records.
Find the reason: either the records have not yet diverged, or they do not diverge in principle (if they do not exist), or they are not correct

Answer 2

Perhaps icmp is blocked.

Answer 3

run "host mydomain.com NS-server.org" in the terminal and see if your domain is resolved on the nameserver (usually there are 4 of them, for example in amazon, or microsoft azure). It may take up to 24 hours for the nameserver to understand your domain name. The output of the command should be something like this:

Using domain server:
Name: NS-server.org
Address: ххх.ххх.ххх.ххх#53
Aliases: 

mydomain.com has address <your-server-ip>
mydomain.com has address <your-server-ip>