Looking Glass Utilities - Router to Host Traceroute
Allows a user to view all router hops encountered in
the path between a Global Crossing node and a specified
URL address
Trying trace from node 'Miami, FL, US' to '208.65.153.253'
1 64.214.16.65 (64.214.16.65) 0.710 ms 0.565 ms
2 ge3-30-1000M.ar1.MIA2.gblx.net (67.16.129.78) 0.537 ms 0.501 ms
3 YOUTUBE-LLC.Tengigabitethernet1-3.ar1.MIA2.gblx.net (64.211.60.250) 0.687 ms 0.596 ms
4 * (*) * ms * ms
5 * (*) * ms * ms
6 * (*) * ms * ms
7 * (*) * ms * ms
8 * (*) * ms * ms
9 * (*) * ms * ms
10 208.65.153.253 (208.65.153.253) 71.441 ms 71.629 ms
Command completed
If a returned message contains or is completely composed of ***, this is
probably the result of a filtering device (i.e. firewall) encountered along
the path being traced. The same explanation would apply for no output in
the case of a ping query.