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)

50,270

IPs (Filtered)

5,185

Networks (Filtered)

200

Messages (Filtered)

84,458

Analysis

United States has contributed 5,185 unique IP addresses across 50,270 failed authentication events, accounting for 84,458 messages across 200 networks. Activity spans from March 5, 2024 to June 21, 2026. The most active networks are AT-88-Z, UK-MICROSOFT-20060601, and MSFT.

Failures

Showing 4,321-4,330 of 50,270 failures, affecting 84,458 messages

Geographic Distribution (US)

Color intensity represents message volume