There are a number of tools you can use to test network connectivity. Here are three of them.
Traceroute is a method of tracing hops or computers between you and the networked computer you are trying to reach.
Ping is a basic Internet program that lets you verify that a particular Internet address exists and can accept requests. The verb ping means the act of using the ping utility or command. Ping is used diagnostically to ensure that a host computer you are trying to reach is actually operating.