ecust.edu.cn has IPv4 has IPv6 ::1 (time=0.000100) edu22.info has IPv4 has IPv6 ::1 (time=0.000104) ia.ac.cn has IPv4 has IPv6 ::1 (time=0.000092) www.uc.cn has IPv4 has IPv6 :: (time=0.000105) www.ucweb.com has IPv4 has IPv6 :: (time=0.000093) zimbra.com has IPv4 has IPv6 :: (time=0.000097)