ecust.edu.cn has IPv4 has IPv6 ::1 (time=0.000074) www.msbauthentication.com has IPv4 has IPv6 ::1 (time=0.000088) www.uc.cn has IPv4 has IPv6 :: (time=0.000111) www.ucweb.com has IPv4 has IPv6 :: (time=0.000104)