ecust.edu.cn has IPv4 has IPv6 ::1 (time=0.000200) edu22.info has IPv4 has IPv6 ::1 (time=0.000073) hofstra.edu has IPv4 has IPv6 :: (time=0.000071) www.uc.cn has IPv4 has IPv6 :: (time=0.000066) www.ucweb.com has IPv4 has IPv6 :: (time=0.000067)