cottonon.com                   has IPv4  has IPv6  ::  (time=0.000106)
ecust.edu.cn                   has IPv4  has IPv6  ::1  (time=0.000093)
edu22.info                     has IPv4  has IPv6  ::1  (time=0.000110)
hofstra.edu                    has IPv4  has IPv6  ::  (time=0.000095)
nasmedia.co.kr                 has IPv4  has IPv6  ::1  (time=0.000144)