cugb.edu.cn                    has IPv4  has IPv6  ::1  (time=0.000135)
ecust.edu.cn                   has IPv4  has IPv6  ::1  (time=0.000090)
edu22.info                     has IPv4  has IPv6  ::1  (time=0.000107)
hofstra.edu                    has IPv4  has IPv6  ::  (time=0.000132)
www.msbauthentication.com      has IPv4  has IPv6  ::1  (time=0.000123)
zimbra.com                     has IPv4  has IPv6  ::  (time=0.000129)