Resolve Hostname

The message "Can't resolve hostname" when connecting to a Minecraft server happens when your computer cannot convert a server's friendly domain name to a numeric address. There are several possible reasons for this message. To fix this issue, try the following:
 * Wait a little while. A domain name can sometimes take 10 or 20 seconds to propagate across the internet.
 * Verify the server is running by refreshing its dashboard page or the home page.
 * If it is the first time connecting to the server, verify the server address in Minecraft exactly matches the one on the dashboard. Make sure there are no leading or trailing spaces.
 * Flush the DNS cache on your computer. For directions, click the appropriate link for Windows or Mac.
 * Restart Minecraft and reconnect to the server.
 * If none of the above work, your ISP may be caching old data, which may resolve itself in minutes or days. As a workaround, use an online domain name to IP address converter to find the numeric address of the server and use it to connect. This number will likely change each time you start your server.