DNS repository domain information for unsubscribe.ser.proofpoint.com. It is categorized as Information Security, points to the IPv4 address(ess): unsubscribe.c15.proofpoint.com. 3.211.145.40 54.92.254.12 54.157.39.108 52.20.224.200 3.213.83.61 52.202.26.42 and we have 2 historical record(s) for it.