25 thg 1, 2019 - 12.102.57.116 1 117-012-mrb.w-vpn.du.edu 130.253.117.12 1 117.102.44.27 117.193.113.139 2 117.193.123.103 117.193.123.103 2 2 localhost 220.231.123.10 1 lowkh.ddns.comp.nus.edu.sg 137.132.87.176 2 .