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)

5,677

IPs (Filtered)

910

Networks (Filtered)

184

Messages (Filtered)

9,185

Analysis

United States has contributed 910 unique IP addresses across 5,677 failed authentication events, accounting for 9,185 messages across 184 networks. Activity spans from March 5, 2024 to May 16, 2026. The most active networks are GOOGLE, TWILI-11, and SENDGRID-149-72-0-0-16. The prevalence of cloud and hosting infrastructure among top sources suggests automated or programmatic spoofing activity.

Failures

Showing 1-10 of 5,677 failures, affecting 9,185 messages

Show Confoundersⓘ

Date ▼	Source IP	Country	City	Network	Messages
5/15/2026	54.89.140.197	US United States	Ashburn	AMAZON-2011L	1
5/15/2026	107.23.70.212	US United States	Ashburn	AMAZON-EC2-8	1
5/15/2026	4.16.147.249	US United States	Seattle	LVLT-ORG-4-8	1
5/15/2026	54.89.140.197	US United States	Ashburn	AMAZON-2011L	1
5/14/2026	205.139.111.43	US United States		CENTURYLINK-LEGACY-SAVVIS-BLK182	1
5/14/2026	74.125.224.46	US United States		GOOGLE ⓘ	1
5/14/2026	209.85.210.43	US United States		GOOGLE ⓘ	1
5/14/2026	2600:1901:101:2::1	US United States		GOOGLE-CLOUD	1
5/14/2026	2607:f8b0:4864:20::f47	US United States		GOOGLE-IPV6	2
5/14/2026	2607:f8b0:4864:20::f45	US United States		GOOGLE-IPV6	2

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Geographic Distribution (US)

Color intensity represents message volume

Top Networks in United States

Top Owners in United States