Sh4mefulNetwork: OUL-16
This page shows DMARC authentication failures originating from the OUL-16 network. Learn more about this data.
Analysis
This network has contributed 12 unique IP addresses across 17 failed authentication events, accounting for 33 messages. Activity spans from December 17, 2024 to July 7, 2026, with peak volume in July 2026 (6 events). The top countries by failure volume are United States (100%). The most active source IPs from this network include 15.204.234.4 (4 failures), 15.204.227.166 (3 failures), 135.148.159.151 (2 failures). Failures from OUL-16 are concentrated in a single country, which may indicate a targeted campaign or regionally hosted infrastructure.
Failures Detected from this Network
Showing 1-17 of 17 failures, affecting 33 messages| Date ▼ | Source IP | Country | Messages |
|---|---|---|---|
| 7/7/2026 | US | 3 | |
| 7/3/2026 | US | 2 | |
| 7/1/2026 | US | 3 | |
| 6/23/2026 | US | 3 | |
| 5/3/2026 | US | 1 | |
| 4/24/2026 | US | 1 | |
| 11/21/2025 | US | 1 | |
| 11/20/2025 | US | 1 | |
| 11/13/2025 | US | 1 | |
| 9/25/2025 | US | 3 | |
| 9/24/2025 | US | 3 | |
| 7/14/2025 | US | 3 | |
| 6/20/2025 | US | 2 | |
| 6/18/2025 | US | 1 | |
| 6/16/2025 | US | 2 | |
| 12/17/2024 | US | 2 | |
| 12/17/2024 | US | 1 |
Countries