cugb.edu.cn                    has IPv4  has IPv6  ::1  (time=0.000197)
ecust.edu.cn                   has IPv4  has IPv6  ::1  (time=0.000147)
ia.ac.cn                       has IPv4  has IPv6  ::1  (time=0.000101)
www.uc.cn                      has IPv4  has IPv6  ::  (time=0.000112)
www.ucweb.com                  has IPv4  has IPv6  ::  (time=0.000134)