Shame on you, stupid spammers.. Sh4meful  DMARC Spoof Detection 🦋 Bluesky

Network: MSFT

The data here is from DMARC analysis for domains I administer, drawn from a larger dataset (comprising millions of authentication records and messages). These entries are from email attempts that failed both SPF and DKIM (and there are often alignment issues - hidden here). In many cases, these failures indicate unauthorized use of the domain name, and are commonly associated with spoofing, phishing, or other abusive mail activity.

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Network Information
Owner:
Microsoft
Countries:
AU AT CA FR DE HK IN IE JP NO SG KR SE CH NL AE GB US
Unique IPs:
3,238
CIDRs:
104.40.0.0/13, 23.96.0.0/13, (more)
Failures Detected from this Network
Showing 951-1,000 of 9,818 (failures, affecting 12,565 messages)
Date ▼ Source IP Country Messages
9/26/2025 40.93.8.39 US 1
9/26/2025 40.93.8.58 US 1
9/26/2025 40.93.8.62 US 1
9/26/2025 52.101.201.43 US 1
9/26/2025 52.103.140.25 US 1
9/25/2025 40.93.10.99 US 1
9/25/2025 40.93.1.1 US 1
9/25/2025 40.93.12.22 US 1
9/25/2025 40.93.12.29 US 1
9/25/2025 40.93.12.4 US 1
9/25/2025 40.93.12.6 US 1
9/25/2025 40.93.12.7 US 1
9/25/2025 40.93.14.103 US 1
9/25/2025 40.93.14.13 US 1
9/25/2025 40.93.14.15 US 1
9/25/2025 40.93.14.28 US 1
9/25/2025 40.93.14.45 US 1
9/25/2025 40.93.14.97 US 1
9/25/2025 40.93.1.72 US 1
9/25/2025 40.93.1.75 US 1
9/25/2025 40.93.1.78 US 1
9/25/2025 40.93.194.66 US 1
9/25/2025 40.93.20.100 US 1
9/25/2025 40.93.20.48 US 1
9/25/2025 40.93.214.75 SE 1
9/25/2025 40.93.2.29 US 1
9/25/2025 40.93.23.29 US 1
9/25/2025 40.93.23.33 US 1
9/25/2025 40.93.2.38 US 1
9/25/2025 40.93.2.68 US 1
9/25/2025 40.93.6.104 US 1
9/25/2025 40.93.6.108 US 2
9/25/2025 40.93.64.30 IE 1
9/25/2025 52.101.46.81 US 1
9/24/2025 23.103.199.145 US 1
9/24/2025 23.103.199.179 US 1
9/24/2025 2603:10b6:208:531::26 US 1
9/24/2025 2603:10b6:408:f6::14 US 1
9/24/2025 2603:10b6:408:fd::11 US 2
9/24/2025 2603:10b6:510:2d8::33 US 1
9/24/2025 2603:10b6:510:2db::14 US 1
9/24/2025 2603:10b6:5:1b4::39 US 1
9/24/2025 2603:10b6:5:335::26 US 1
9/24/2025 2603:10b6:5:3b6::14 US 1
9/24/2025 2603:10b6:610:1f4::12 US 1
9/24/2025 2603:10b6:610:76::9 US 1
9/24/2025 2603:10b6:610:e4::26 US 1
9/24/2025 2603:10b6:802:20::41 US 1
9/24/2025 2603:10b6:806:123::7 US 1
9/24/2025 2603:10b6:806:127::34 US 1