Our system checks the server response code from your website or server. If there is no response, our system will verify the failure using an alternate monitoring location and send an alert.
By default, if your server responds with a code of "200", "301", "302", or "403" your monitor is considered "up" and no alert will be sent.
In addition, you have the option to track 403 (forbidden) and 503 (service unavailable) response codes as failures or as valid responses. All other response codes are considered "down".