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)

50,291

IPs (Filtered)

5,191

Networks (Filtered)

200

Messages (Filtered)

84,492

Analysis

United States has contributed 5,191 unique IP addresses across 50,291 failed authentication events, accounting for 84,492 messages across 200 networks. Activity spans from March 5, 2024 to June 23, 2026. The most active networks are AT-88-Z, UK-MICROSOFT-20060601, and MSFT.

Failures

Showing 4,481-4,490 of 50,291 failures, affecting 84,492 messages

Geographic Distribution (US)

Color intensity represents message volume