We've all been there. A server suddenly stops responding. Your SSH session freezes. An API becomes unreachable. You open a terminal and run the command you've probably typed thousands of times: ping example.com And then... Request timed out. Great. Now what? Is the server actually down? Is ICMP being blocked? Did your connection drop? Is DNS acting up? Did something change in your network? Traditional ping tells you that packets aren't coming back. It ...