cugb.edu.cn                    has IPv4  has IPv6  ::1  (time=0.000172)
ecust.edu.cn                   has IPv4  has IPv6  ::1  (time=0.000136)
edu22.info                     has IPv4  has IPv6  ::1  (time=0.000098)
mobappcenter3.com              has IPv4  has IPv6  ::1  (time=0.015237)