Subdomain is not working

After setting define('WP_ALLOW_MULTISITE', true); in your wp-config.php file and doing “Network Activate”, you need to copy some new constants to your wp-config.php file. Are the following constants definitions there?

define('MULTISITE', true);
define('SUBDOMAIN_INSTALL', true);
define('SITE_ID_CURRENT_SITE', 1);
define('BLOG_ID_CURRENT_SITE', 1);