cottonon.com                   has IPv4  has IPv6  ::  (time=0.000236)
ecust.edu.cn                   has IPv4  has IPv6  ::1  (time=0.000110)
edu22.info                     has IPv4  has IPv6  ::1  (time=0.000158)
univ-msila.dz                  has IPv4  has IPv6  ::1  (time=0.000214)