Shame on you, stupid spammers.. DMARC Spoof Detection
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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)

231

IPs (Filtered)

70

Networks (Filtered)

11

Messages (Filtered)

308

Analysis

Japan has contributed 70 unique IP addresses across 231 failed authentication events, accounting for 308 messages across 11 networks. Activity spans from May 7, 2024 to April 8, 2026. The most active networks are UK-MICROSOFT-20060601, MSFT, and KIR.

Failures

Showing 11-20 of 231 failures, affecting 308 messages
Date ▲ Source IP Country City Network Messages
9/13/2024 40.93.73.1 JP Japan Tokyo MSFT ⓘ 1
9/13/2024 40.93.130.26 JP Japan Osaka MSFT ⓘ 1
9/13/2024 52.103.194.9 JP Japan Osaka MSFT ⓘ 2
9/13/2024 52.103.171.10 JP Japan Tokyo MSFT ⓘ 1
9/13/2024 52.103.171.2 JP Japan Tokyo MSFT ⓘ 1
9/13/2024 52.103.194.11 JP Japan Osaka MSFT ⓘ 1
9/18/2024 40.93.73.4 JP Japan Tokyo MSFT ⓘ 1
9/18/2024 40.107.117.125 JP Japan Tokyo MSFT ⓘ 1
9/18/2024 52.103.171.10 JP Japan Tokyo MSFT ⓘ 1
9/18/2024 52.103.171.8 JP Japan Tokyo MSFT ⓘ 1
Top Networks in Japan
Top Owners in Japan