Sh4mefulNetwork: pfptnl ⚠ Confounder
⚠ Confounder Detected: Proofpoint Email Security
Proofpoint network identifier
Proofpoint network identifier
This page shows DMARC authentication failures originating from the pfptnl network. Learn more about this data.
Network Information
- Owner:
- Proofpoint
- Countries:
- US
- Unique IPs:
- 2
- CIDR:
-
185.183.28.0/24
Analysis
This network has contributed 2 unique IP addresses across 18 failed authentication events, accounting for 22 messages. Activity spans from May 31, 2024 to September 26, 2025, with peak volume in June 2025 (6 events). The top countries by failure volume are United States (100%). The most active source IPs from this network include 185.183.28.103 (13 failures), 185.183.28.105 (6 failures). Failures from pfptnl (Proofpoint) are concentrated in a single country, which may indicate a targeted campaign or regionally hosted infrastructure.
Failures Detected from this Network
Showing 1-18 of 18 failures, affecting 22 messagesCountries