cugb.edu.cn has IPv4 has IPv6 ::1 (time=0.000098) edu22.info has IPv4 has IPv6 ::1 (time=0.000108) ia.ac.cn has IPv4 has IPv6 ::1 (time=0.000097) www.uc.cn has IPv4 has IPv6 :: (time=0.000112) www.ucweb.com has IPv4 has IPv6 :: (time=0.000160) zimbra.com has IPv4 has IPv6 :: (time=0.000125)