Host 4.156.52.193.in-addr.arpa not found: 3(NXDOMAIN)
Host 5.156.52.193.in-addr.arpa not found: 3(NXDOMAIN)
7.156.52.193.in-addr.arpa domain name pointer P880-PUST.univ-rouen.fr.
9.156.52.193.in-addr.arpa domain name pointer prepareseau.univ-rouen.fr.