Everyone with a website knows that, things can sometimes go wrong. Sometimes it is with the code, the server or the network. Uptime Robot is all about helping you to keep your websites up. It monitors your websites every 5 minutes and alerts you if your sites are down.
If the status code doesn't indicate a problem, all is good
If the status code is~400+ and 500+, then the site is not loading
In order to make sure the site is down, Uptime Robot makes several more checks in the next 30 seconds
If the site is still down, it sends an alert