Network: CENTURYLINK-LEGACY-QWEST-INET-12
This page shows DMARC authentication failures originating from the CENTURYLINK-LEGACY-QWEST-INET-12 network. Learn more about this data.
Analysis
This network has contributed 3 unique IP addresses across 13 failed authentication events, accounting for 18 messages. Activity spans from September 13, 2024 to June 27, 2025, with peak volume in September 2024 (6 events). The top countries by failure volume are United States (100%). The most active source IPs from this network include 66.77.129.73 (6 failures), 66.77.129.72 (4 failures), 66.77.129.71 (3 failures). Failures from CENTURYLINK-LEGACY-QWEST-INET-12 (Lumen), a commercial ISP, are concentrated in a single country, which may indicate a targeted campaign or regionally hosted infrastructure.