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)

49,824

IPs (Filtered)

5,167

Networks (Filtered)

200

Messages (Filtered)

83,797

Analysis

United States has contributed 5,167 unique IP addresses across 49,824 failed authentication events, accounting for 83,797 messages across 200 networks. Activity spans from March 5, 2024 to June 9, 2026. The most active networks are AT-88-Z, UK-MICROSOFT-20060601, and MSFT.

Failures

Showing 3,051-3,060 of 49,824 failures, affecting 83,797 messages

Geographic Distribution (US)

Color intensity represents message volume