cottonon.com                   has IPv4  has IPv6  ::  (time=0.000088)
ecust.edu.cn                   has IPv4  has IPv6  ::1  (time=0.000169)
edu22.info                     has IPv4  has IPv6  ::1  (time=0.000220)
univ-msila.dz                  has IPv4  has IPv6  ::1  (time=0.000128)