Apache httpd.conf for redirecting ip to hostname

Ok. You are missing a rewrite condition

<VirtualHost XX.XX.XX.XX>

DocumentRoot "/var/www/html"
#ServerName ayz-abc.mysite.com/

 # Other directives here
 RewriteEngine On
 RewriteCond %{HTTP_HOST} !^ayz-abc.mysite.com$
 RewriteRule /.* https://ayz-abc.mysite.com/ [R]

</VirtualHost>

If you don't include this condition it will redirect even with the hostname