Online network diagnostics — DNS, GeoIP, ping, SSL, Whois, HTTP headers, and more. No login required.
A traceroute shows the routers between our server and the host, one hop at a time. Each hop is probed three times with ICMP echo (mtr), named by reverse DNS where it has a name, and tagged with the network (AS number) that runs it, so you can see where the path leaves one provider for the next and where the time goes.