Sh4mefulNetwork: LEIDOS-149-8-0-0-16
This page shows DMARC authentication failures originating from the LEIDOS-149-8-0-0-16 network. Learn more about this data.
Network Information
- Org ID:
LEIDO- Address:
- 1750 Presidents Street, Reston, VA 20190
- Countries:
- US
- Unique IPs:
- 4
- CIDR:
149.8.0.0/16
Analysis
This network has contributed 4 unique IP addresses across 10 failed authentication events, accounting for 29 messages. Activity spans from February 14, 2025 to October 1, 2025, with peak volume in September 2025 (9 events). The top countries by failure volume are United States (100%). The most active source IPs from this network include 149.8.13.136 (6 failures), 149.8.13.133 (5 failures), 149.8.13.135 (1 failure). Failures from LEIDOS-149-8-0-0-16 are concentrated in a single country, which may indicate a targeted campaign or regionally hosted infrastructure.
Failures Detected from this Network
Showing 1-10 of 10 failures, affecting 29 messages| Date ▼ | Source IP | Country | Messages |
|---|---|---|---|
| 10/1/2025 | US | 1 | |
| 10/1/2025 | US | 5 | |
| 9/26/2025 | US | 4 | |
| 9/26/2025 | US | 2 | |
| 9/26/2025 | US | 3 | |
| 9/24/2025 | US | 4 | |
| 9/24/2025 | US | 3 | |
| 9/17/2025 | US | 4 | |
| 9/17/2025 | US | 2 | |
| 2/14/2025 | US | 1 |
Countries