Summary
| Country |
 United States
|
| Domain | proofpoint.com |
| Size | 512 |
| Registry | ARIN |
| Network Name | PROOF |
Whois
American Registry for Internet Numbers NET66 (NET-66-0-0-0-0) 66.0.0.0 - 66.255.255.255
Proofpoint, Inc. PROOF (NET-66-159-224-0-1) 66.159.224.0 - 66.159.255.255
CIDR IP address subranges within 66.159.238.0/23 subnet
- 66.159.238.0/24
- 66.159.239.0/24