edu22.info                     has IPv4  has IPv6  ::1  (time=0.000111)
ia.ac.cn                       has IPv4  has IPv6  ::1  (time=0.000122)
www.uc.cn                      has IPv4  has IPv6  ::  (time=0.000121)
www.ucweb.com                  has IPv4  has IPv6  ::  (time=0.000092)