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 2,301-2,350 of 9,818 (failures, affecting 12,565 messages)
Date ▼ Source IP Country Messages
7/2/2025 104.47.66.43 US 2
7/2/2025 104.47.66.48 US 1
7/2/2025 104.47.70.42 US 1
7/2/2025 104.47.73.170 US 1
7/2/2025 104.47.74.42 US 1
7/2/2025 104.47.74.43 US 1
7/2/2025 104.47.74.44 US 1
7/2/2025 2603:10b6:303:b9::28 US 1
7/2/2025 2603:10b6:510:328::28 US 1
7/2/2025 40.107.100.75 US 1
7/2/2025 40.107.100.88 US 1
7/2/2025 40.107.220.81 US 1
7/2/2025 40.93.131.1 IN 1
7/2/2025 40.93.131.28 IN 1
7/2/2025 40.93.64.10 IE 1
7/2/2025 40.93.64.29 IE 1
7/2/2025 40.93.64.4 IE 1
7/2/2025 40.93.64.5 IE 1
7/2/2025 40.93.64.6 IE 1
7/2/2025 40.93.64.7 IE 1
7/2/2025 40.93.65.13 NL 1
7/2/2025 40.93.65.68 NL 2
7/2/2025 40.95.21.52 US 1
7/2/2025 40.95.36.68 US 1
7/2/2025 40.95.46.83 US 1
7/2/2025 52.101.44.132 US 1
7/1/2025 104.47.11.233 NL 1
7/1/2025 104.47.18.104 NL 1
7/1/2025 104.47.51.47 US 1
7/1/2025 104.47.55.173 US 1
7/1/2025 104.47.55.175 US 1
7/1/2025 104.47.55.176 US 1
7/1/2025 104.47.55.177 US 1
7/1/2025 104.47.55.40 US 2
7/1/2025 104.47.55.42 US 2
7/1/2025 104.47.55.46 US 1
7/1/2025 104.47.55.47 US 1
7/1/2025 104.47.55.48 US 2
7/1/2025 104.47.55.49 US 1
7/1/2025 104.47.56.170 US 2
7/1/2025 104.47.56.171 US 1
7/1/2025 104.47.56.172 US 2
7/1/2025 104.47.56.174 US 1
7/1/2025 104.47.56.175 US 1
7/1/2025 104.47.57.168 US 2
7/1/2025 104.47.57.170 US 1
7/1/2025 104.47.57.172 US 1
7/1/2025 104.47.57.173 US 2
7/1/2025 104.47.57.174 US 1
7/1/2025 104.47.58.168 US 2