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 201-250 of 9,818 (failures, affecting 12,565 messages)
Date ▼ Source IP Country Messages
12/10/2025 40.93.12.4 US 2
12/10/2025 40.93.12.7 US 1
12/10/2025 40.93.1.38 US 1
12/10/2025 40.93.14.103 US 1
12/10/2025 40.93.1.74 US 1
12/10/2025 40.93.1.79 US 1
12/10/2025 40.93.214.72 SE 1
12/10/2025 40.93.2.60 US 1
12/10/2025 40.93.4.13 US 1
12/10/2025 40.93.6.110 US 1
12/10/2025 40.93.64.11 IE 1
12/10/2025 40.93.64.82 IE 1
12/9/2025 40.107.200.142 US 1
12/9/2025 40.93.194.105 US 1
12/9/2025 40.93.198.137 US 1
12/6/2025 40.93.1.104 US 1
12/6/2025 40.93.14.101 US 1
12/6/2025 40.93.14.97 US 1
12/6/2025 40.93.1.74 US 1
12/6/2025 40.93.20.100 US 1
12/6/2025 40.93.4.3 US 1
12/6/2025 40.93.65.71 NL 2
12/5/2025 23.103.199.144 US 1
12/5/2025 40.93.10.101 US 2
12/5/2025 40.93.10.73 US 1
12/5/2025 40.93.10.75 US 1
12/5/2025 40.93.1.107 US 1
12/5/2025 40.93.1.110 US 1
12/5/2025 40.93.12.2 US 1
12/5/2025 40.93.131.31 IN 1
12/5/2025 40.93.132.7 IN 1
12/5/2025 40.93.14.101 US 1
12/5/2025 40.93.14.11 US 1
12/5/2025 40.93.14.27 US 1
12/5/2025 40.93.14.45 US 1
12/5/2025 40.93.1.78 US 1
12/5/2025 40.93.20.103 US 2
12/5/2025 40.93.20.61 US 1
12/5/2025 40.93.20.98 US 1
12/5/2025 40.93.214.100 SE 1
12/5/2025 40.93.214.96 SE 2
12/5/2025 40.93.23.32 US 1
12/5/2025 40.93.4.5 US 1
12/5/2025 40.93.6.107 US 1
12/5/2025 40.93.64.28 IE 1
12/5/2025 40.93.64.3 IE 1
12/5/2025 40.93.64.67 IE 1
12/5/2025 40.93.64.83 IE 1
12/5/2025 40.93.65.1 NL 1
12/5/2025 40.93.65.51 NL 1