ASN 13916 - Proofpoint Inc.Organization : Proofpoint Inc.Total Countries Listed: 1Total IP Ranges Listed: 9United States of America - IP Ranges: 9IP Range List66.159.224.0/2366.159.229.0/2466.159.238.0/2366.159.240.0/20148.163.128.0/23148.163.130.0/24199.33.143.0/24208.83.136.0/24208.83.138.0/24