cugb.edu.cn                    has IPv4  has IPv6  ::1  (time=0.000078)
ecust.edu.cn                   has IPv4  has IPv6  ::1  (time=0.000107)
edu22.info                     has IPv4  has IPv6  ::1  (time=0.000085)
ia.ac.cn                       has IPv4  has IPv6  ::1  (time=0.000086)
www.uc.cn                      has IPv4  has IPv6  ::  (time=0.000132)
www.ucweb.com                  has IPv4  has IPv6  ::  (time=0.000098)