با https از اینجا چک کنید
https://tools.pingdom.com
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این مشکل وجود داره .... درسته؟From what it sounds like, there may be a configuration issue on the server where the domain is hosted. Normally, if there is no SSL certificate set up on a domain, it will use the shared certificate or the hostname certificate. If there is no default vhost for 443 on that IP, by default apache will load the first SSL vhost. If you don't have root access to the server, you may want to consider getting with your provider to ensure that there isn't a server configuration issue.