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DMARC Spoof Detection, Japan

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

Failures (Filtered)

57

IPs (Filtered)

29

Networks (Filtered)

10

Messages (Filtered)

65

Analysis

Japan has contributed 29 unique IP addresses across 57 failed authentication events, accounting for 65 messages across 10 networks. Activity spans from May 7, 2024 to March 12, 2026. The most active networks are MSFT, KIR, and RIPE-ERX-147-44-0-0.

Failures

Showing 21-30 of 57 (failures, affecting 65 messages)
Date ▼ Source IP Country City Network Messages
6/27/2025 52.103.171.3 JP Japan Tokyo MSFT ⓘ 1
6/15/2025 210.134.51.184 JP Japan KAGOYA 1
6/9/2025 133.18.94.79 JP Japan KIR 1
6/5/2025 133.18.94.79 JP Japan KIR 3
4/21/2025 123.242.209.237 JP Japan CSF-NET-CIDR-BLK-JP 2
1/17/2025 52.103.194.10 JP Japan Osaka MSFT ⓘ 1
1/8/2025 52.103.171.0 JP Japan Tokyo MSFT ⓘ 1
1/8/2025 52.103.194.3 JP Japan Osaka MSFT ⓘ 1
12/20/2024 52.103.194.11 JP Japan Osaka MSFT ⓘ 1
12/11/2024 52.103.194.1 JP Japan Osaka MSFT ⓘ 1
Top Networks in Japan
Top Owners in Japan
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