Create sub-domain on public url or IP for AWS instance

Question

I have hosted my wordpress multisite on my amazon instance ec2-**-**-***-*.us-west-2.compute.amazonaws.com and the main site is showing on my IP **.**.***.* or public url , the sub-sites I wanted to show in sub domain so I have created the hosted on ec2 instance like

ec2-**-**-***-*.us-west-2.compute.amazonaws.com
india.ec2-**-**-***-*.us-west-2.compute.amazonaws.com
saudi.ec2-**-**-***-*.us-west-2.compute.amazonaws.com
canada.ec2-**-**-***-*.us-west-2.compute.amazonaws.com

or on IP like below

**.**.***.*
india.**.**.***.*
saudi.**.**.***.*
canada.**.**.***.*

So how can I use sub-domains on IP or public-url, I have added sub-domains to my hosts file and also added the virtual hosts for the same.

Note: I can add DNS to the domain hosting and host like domain.com, india.domain.com,saudi.domain.com,canada.domain.com but I wanted to use on IP or public URL of AWS instance.

hosts files:

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost6 localhost6.localdomain6
127.0.0.1  **.**.**.* india.**.**.**.* saudi.**.**.**.* canada.**.**.**.*
127.0.0.1 ec2-**-**-***-*.us-west-2.compute.amazonaws.com india.ec2-**-**-***-*.us-west-2.compute.amazonaws.com canada.ec2-**-**-***-*.us-west-2.compute.amazonaws.com saudi.ec2-**-**-***-*.us-west-2.compute.amazonaws.com

Virtual host added for all regional sites

<VirtualHost *:80>
  ServerName india.ec2-**-**-***-*.us-west-2.compute.amazonaws.com
  ServerAlias india.ec2-**-**-***-*.us-west-2.compute.amazonaws.com
  DocumentRoot "/var/www/html"
  <Directory "/var/www/html">
    Options +Indexes +Includes +FollowSymLinks +MultiViews
        AllowOverride All
        Require all granted
  </Directory>
</VirtualHost>

similarly added the virtual host for other sites canada and saudi and apart from this DocumentRoot "/var/www/html" will be same for all the site as I am making wordpress multisite.

Answer 1

Unfortunately you cannot do that. You can't modify the DNS of the domain amazonaws.com. This is the AWS domain for all AWS services, and it does not allow for any customer DNS records.