Sh4mefulNetwork: ATT
This page shows DMARC authentication failures originating from the ATT network. Learn more about this data.
Analysis
This network has contributed 8 unique IP addresses across 38 failed authentication events, accounting for 73 messages. Activity spans from September 13, 2024 to June 28, 2025, with peak volume in December 2024 (12 events). The top countries by failure volume are United States (100%). The most active source IPs from this network include 12.19.225.243 (12 failures), 12.16.15.243 (6 failures), 12.97.107.130 (6 failures). Failures from ATT (AT&T), a commercial ISP, are concentrated in a single country, which may indicate a targeted campaign or regionally hosted infrastructure.
Failures Detected from this Network
Showing 1-38 of 38 failures, affecting 73 messages| Date ▼ | Source IP | Country | Messages |
|---|---|---|---|
| 6/28/2025 | US | 5 | |
| 6/27/2025 | US | 1 | |
| 6/27/2025 | US | 5 | |
| 2/26/2025 | US | 3 | |
| 2/14/2025 | US | 3 | |
| 1/17/2025 | US | 3 | |
| 1/8/2025 | US | 3 | |
| 12/20/2024 | US | 3 | |
| 12/19/2024 | US | 1 | |
| 12/18/2024 | US | 1 | |
| 12/18/2024 | US | 1 | |
| 12/11/2024 | US | 3 | |
| 12/9/2024 | US | 1 | |
| 12/5/2024 | US | 1 | |
| 12/5/2024 | US | 3 | |
| 12/5/2024 | US | 1 | |
| 12/4/2024 | US | 2 | |
| 12/4/2024 | US | 1 | |
| 11/20/2024 | US | 2 | |
| 11/20/2024 | US | 2 | |
| 11/19/2024 | US | 1 | |
| 11/13/2024 | US | 2 | |
| 11/12/2024 | US | 1 | |
| 11/12/2024 | US | 1 | |
| 11/6/2024 | US | 2 | |
| 10/30/2024 | US | 1 | |
| 10/30/2024 | US | 1 | |
| 10/23/2024 | US | 1 | |
| 10/23/2024 | US | 4 | |
| 10/22/2024 | US | 1 | |
| 9/27/2024 | US | 2 | |
| 9/27/2024 | US | 1 | |
| 9/26/2024 | US | 1 | |
| 9/20/2024 | US | 5 | |
| 9/20/2024 | US | 1 | |
| 9/18/2024 | US | 1 | |
| 9/17/2024 | US | 1 | |
| 9/13/2024 | US | 1 |
Countries