Network: VIETTEL-VN

This network has contributed 13 unique IP addresses across 18 failed authentication events, accounting for 31 messages. Activity spans from February 6, 2025 to May 30, 2026, with peak volume in March 2026 (8 events). The top countries by failure volume are Vietnam (100%). The most active source IPs from this network include 171.237.177.68 (5 failures), 171.237.179.153 (3 failures), 117.1.29.171 (1 failure). Failures from VIETTEL-VN are concentrated in a single country, which may indicate a targeted campaign or regionally hosted infrastructure.