ecust.edu.cn has IPv4 has IPv6 ::1 (time=0.000133) edu22.info has IPv4 has IPv6 ::1 (time=0.000093) ia.ac.cn has IPv4 has IPv6 ::1 (time=0.000083) www.uc.cn has IPv4 has IPv6 :: (time=0.000124) www.ucweb.com has IPv4 has IPv6 :: (time=0.000100) zimbra.com has IPv4 has IPv6 :: (time=0.000111)