Traceroute

Traceroute is a command present on most operating systems. It is a network diagnostic tool that allows to determine the path followed by a data packet. Thus, it is possible to draw up a map of the routers present between a source machine and a target machine.

See this tutorial for more information: https://kb.planethoster.com/en/guide/technical-advice/debug/how-to-do-a-traceroute/.