How to configure nginx not to show if IP is used in the brow

hi

my linode runs few websites using nqinx. If I use ip address in a browser nginx displays one of the sites. I think it's the last one I set up.

How can I make it so nothing is displayed?

Thank you

R.

Conf file for the site that is displayed if ip is used.

server {
    listen   80;
    server_name yota.rsness.com;
    access_log /srv/www/wordpress/zxc.zxcv.com/logs/access.log;
    error_log /srv/www/wordpress/zxc.zxcv.com/logs/error.log;

    location / {
        root   /srv/www/wordpress/zxc.zxcv.com/public_html;
        try_files $uri $uri/ /index.php?q=$uri&$args;
        index  index.html index.htm index.php;
    }

    location ~ \.php$ {
        include fastcgi_params;
        fastcgi_pass  127.0.0.1:9000;
        fastcgi_index index.php;
        fastcgi_param  SCRIPT_FILENAME  /srv/www/wordpress/zxc.zxcv.com/public_html$fastcgi_script_name;
    }
}