Sh4mefulNetwork: UK-PROOFPOINT-20151223 ⚠ Confounder
⚠ Confounder Detected: Proofpoint Email Security
Proofpoint network identifier
Proofpoint network identifier
This page shows DMARC authentication failures originating from the UK-PROOFPOINT-20151223 network. Learn more about this data.
Network Information
- Owner:
- Proofpoint
- WHOIS Owner:
- ORG-PL230-RIPE
- Countries:
- GB
- Unique IPs:
- 3
- CIDRs:
185.132.180.0/24,185.132.182.0/24
Analysis
This network has contributed 3 unique IP addresses across 23 failed authentication events, accounting for 24 messages. Activity spans from April 17, 2024 to December 11, 2025, with peak volume in July 2025 (5 events). The top countries by failure volume are United Kingdom (100%). The most active source IPs from this network include 185.132.180.145 (11 failures), 185.132.180.147 (11 failures), 185.132.182.196 (1 failure). Failures from UK-PROOFPOINT-20151223 (Proofpoint) are concentrated in a single country, which may indicate a targeted campaign or regionally hosted infrastructure.
Failures Detected from this Network
Showing 1-23 of 23 failures, affecting 24 messages| Date ▼ | Source IP | Country | Messages |
|---|---|---|---|
| 12/11/2025 | GB | 1 | |
| 10/1/2025 | GB | 1 | |
| 9/4/2025 | GB | 1 | |
| 8/22/2025 | GB | 1 | |
| 7/23/2025 | GB | 1 | |
| 7/17/2025 | GB | 1 | |
| 7/11/2025 | GB | 1 | |
| 7/3/2025 | GB | 1 | |
| 7/2/2025 | GB | 2 | |
| 6/26/2025 | GB | 1 | |
| 6/11/2025 | GB | 1 | |
| 6/6/2025 | GB | 1 | |
| 5/16/2025 | GB | 1 | |
| 4/30/2025 | GB | 1 | |
| 12/20/2024 | GB | 1 | |
| 12/19/2024 | GB | 1 | |
| 12/11/2024 | GB | 1 | |
| 12/5/2024 | GB | 1 | |
| 10/30/2024 | GB | 1 | |
| 8/21/2024 | GB | 1 | |
| 6/26/2024 | GB | 1 | |
| 5/10/2024 | GB | 1 | |
| 4/17/2024 | GB | 1 |
Countries