Shame on you, stupid spammers.. DMARC Spoof Detection

DMARC Spoof Detection, United States

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This page shows DMARC authentication failures originating from United States. Learn more about this data.

Failures (Filtered)

50,727

IPs (Filtered)

5,208

Networks (Filtered)

200

Messages (Filtered)

85,149

Analysis

United States has contributed 5,208 unique IP addresses across 50,727 failed authentication events, accounting for 85,149 messages across 200 networks. Activity spans from March 5, 2024 to June 24, 2026. The most active networks are AT-88-Z, UK-MICROSOFT-20060601, and MSFT.

Failures

Showing 4,651-4,660 of 50,727 failures, affecting 85,149 messages

Geographic Distribution (US)

Color intensity represents message volume