Shame on you, stupid spammers.. DMARC Spoof Detection
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DMARC Spoof Detection, United Kingdom

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

Failures (Filtered)

269

IPs (Filtered)

84

Networks (Filtered)

29

Messages (Filtered)

369

Analysis

United Kingdom has contributed 84 unique IP addresses across 269 failed authentication events, accounting for 369 messages across 29 networks. Activity spans from March 13, 2024 to April 10, 2026. The most active networks are AT-88-Z, MIMECAST-NET2, and MIMECAST-NET.

Failures

Showing 51-60 of 269 failures, affecting 369 messages
Date ▼ Source IP Country City Network Messages
10/10/2025 91.220.42.227 GB United Kingdom MIMECAST-NET2 ⚠ 3
10/10/2025 195.130.217.221 GB United Kingdom MIMECAST-NET ⚠ 3
10/8/2025 212.20.240.146 GB United Kingdom Edinburgh pulsant5492 1
10/8/2025 195.130.217.221 GB United Kingdom MIMECAST-NET ⚠ 1
10/8/2025 91.220.42.227 GB United Kingdom MIMECAST-NET2 ⚠ 2
10/3/2025 13.42.61.32 ⚠ GB United Kingdom City of London AT-88-Z ⓘ 1
10/3/2025 91.220.42.227 GB United Kingdom MIMECAST-NET2 ⚠ 2
10/3/2025 195.130.217.221 GB United Kingdom MIMECAST-NET ⚠ 2
10/3/2025 91.220.42.227 GB United Kingdom MIMECAST-NET2 ⚠ 2
10/2/2025 2a01:111:f403:c205::3 GB United Kingdom London UK-MICROSOFT-20060601 1
Top Networks in United Kingdom
Top Owners in United Kingdom