Looking Glass is the tool that provides users with information related to an ISP backbone routing and the efficiency of their network like VTC. It allows you to search up our routing information via IP address with only a few simple steps. This tool lets you search for the information in 3 types of queries: ping,mtr and traceroute. If you experience a problem with this site that you would like to report, please contact us at nas.ktdh.intecom@vtc.vn Thank you!