cottonon.com                   has IPv4  has IPv6  ::  (time=0.000194)
ecust.edu.cn                   has IPv4  has IPv6  ::1  (time=0.000101)
pega.com                       has IPv4  has IPv6  ::  (time=0.000099)
univ-msila.dz                  has IPv4  has IPv6  ::1  (time=0.000248)