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 2,751-2,800 of 9,818 (failures, affecting 12,565 messages)
Date ▼ Source IP Country Messages
6/18/2025 40.107.92.43 US 1
6/18/2025 40.107.93.86 US 1
6/18/2025 40.107.94.68 US 1
6/18/2025 40.107.96.66 US 1
6/18/2025 40.93.199.74 US 1
6/18/2025 40.93.6.31 US 1
6/18/2025 40.93.64.3 IE 1
6/18/2025 40.93.65.66 NL 1
6/18/2025 40.93.6.75 US 1
6/18/2025 40.95.38.77 US 1
6/18/2025 52.101.56.104 US 1
6/17/2025 40.107.220.85 US 1
6/17/2025 40.107.237.79 US 1
6/17/2025 40.107.243.54 US 1
6/17/2025 40.107.94.41 US 1
6/17/2025 40.107.94.87 US 1
6/17/2025 40.95.36.41 US 1
6/13/2025 104.47.59.172 US 1
6/13/2025 40.93.69.26 FR 1
6/12/2025 104.47.55.170 US 1
6/12/2025 104.47.57.49 US 1
6/12/2025 104.47.58.174 US 1
6/12/2025 104.47.58.176 US 1
6/12/2025 104.47.58.49 US 1
6/12/2025 104.47.59.174 US 1
6/12/2025 104.47.66.44 US 1
6/12/2025 104.47.66.49 US 1
6/12/2025 104.47.70.42 US 1
6/12/2025 104.47.73.40 US 1
6/12/2025 104.47.74.41 US 1
6/12/2025 104.47.75.172 CA 1
6/12/2025 2603:10b6:510:345::10 US 1
6/12/2025 2603:10b6:806:122::23 US 1
6/12/2025 40.107.201.101 US 1
6/12/2025 40.107.94.139 US 1
6/12/2025 40.93.1.1 US 1
6/12/2025 40.93.12.18 US 1
6/12/2025 40.93.131.24 IN 1
6/12/2025 40.93.1.36 US 1
6/12/2025 40.93.1.7 US 1
6/12/2025 40.93.6.38 US 2
6/12/2025 40.93.64.12 IE 1
6/12/2025 40.93.64.13 IE 1
6/12/2025 40.93.64.28 IE 1
6/12/2025 40.93.64.30 IE 1
6/12/2025 40.93.65.12 NL 1
6/12/2025 40.93.65.70 NL 1
6/12/2025 40.93.6.77 US 1
6/12/2025 40.93.69.29 FR 1
6/12/2025 52.101.193.110 US 1