IP Canonicalization

[daryakuritsyna]

Your site's IP 23.21.223.98 does not redirect to your site's domain name. This could cause duplicate content problems if a search engine indexes your site under both its IP and domain name.

In order to pass this test you must consider using a 301 re-write rule in your .htaccess file so that your site's IP points to your domain name.
If your site is running on apache server, you could put these lines in your .htaccess after RewriteEngine on line:
RewriteCond %{HTTP_HOST} ^XXX.XXX.XXX.XXX
RewriteRule (.*) http://www.yourdomain.com/$1 [R=301,L]