Sh4mefulNetwork: VIS-BLOCK
This page shows DMARC authentication failures originating from the VIS-BLOCK network. Learn more about this data.
Analysis
This network has contributed 3 unique IP addresses across 7 failed authentication events, accounting for 19 messages. Activity spans from September 13, 2024 to July 2, 2026, with peak volume in September 2024 (2 events). The top countries by failure volume are United States (100%). The most active source IPs from this network include 71.187.96.27 (4 failures), 74.103.252.169 (2 failures), 108.36.196.62 (1 failure). Failures from VIS-BLOCK are concentrated in a single country, which may indicate a targeted campaign or regionally hosted infrastructure.
Failures Detected from this Network
Showing 1-7 of 7 failures, affecting 19 messages| Date ▼ | Source IP | Country | Messages |
|---|---|---|---|
| 7/2/2026 | US | 1 | |
| 3/17/2025 | US | 1 | |
| 3/15/2025 | US | 1 | |
| 11/20/2024 | US | 1 | |
| 11/12/2024 | US | 1 | |
| 9/27/2024 | US | 7 | |
| 9/13/2024 | US | 7 |
Countries