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 1,051-1,100 of 9,818 (failures, affecting 12,565 messages)
Date ▼ Source IP Country Messages
9/24/2025 40.93.23.91 US 1
9/24/2025 40.93.23.95 US 1
9/24/2025 40.93.23.98 US 1
9/24/2025 40.93.23.99 US 1
9/24/2025 40.93.4.1 US 1
9/24/2025 40.93.4.3 US 1
9/24/2025 40.93.4.5 US 3
9/24/2025 40.93.4.6 US 1
9/24/2025 40.93.6.104 US 1
9/24/2025 40.93.6.105 US 1
9/24/2025 40.93.6.106 US 2
9/24/2025 40.93.6.110 US 1
9/24/2025 40.93.6.33 US 1
9/24/2025 40.93.64.10 IE 1
9/24/2025 40.93.64.11 IE 1
9/24/2025 40.93.64.13 IE 2
9/24/2025 40.93.64.15 IE 2
9/24/2025 40.93.64.70 IE 1
9/24/2025 40.93.64.82 IE 1
9/24/2025 40.93.64.83 IE 1
9/24/2025 40.93.64.86 IE 1
9/24/2025 40.93.65.12 NL 1
9/24/2025 40.93.65.14 NL 1
9/24/2025 40.93.65.30 NL 1
9/24/2025 40.93.65.4 NL 1
9/24/2025 40.93.65.49 NL 1
9/24/2025 40.93.6.78 US 2
9/24/2025 40.93.69.28 FR 1
9/24/2025 40.93.69.31 FR 1
9/24/2025 40.93.81.75 NO 1
9/24/2025 40.93.81.77 NO 1
9/24/2025 40.93.81.79 NO 1
9/24/2025 40.93.8.35 US 1
9/24/2025 40.93.8.37 US 1
9/24/2025 40.93.8.38 US 1
9/24/2025 40.93.8.39 US 1
9/24/2025 40.93.8.58 US 1
9/24/2025 40.93.8.60 US 1
9/24/2025 40.93.8.61 US 1
9/24/2025 52.101.193.25 US 1
9/24/2025 52.101.48.113 US 1
9/24/2025 52.101.56.89 US 1
9/24/2025 52.101.70.11 NL 1
9/23/2025 40.93.10.79 US 2
9/23/2025 40.93.1.15 US 1
9/23/2025 40.93.1.2 US 1
9/23/2025 40.93.12.18 US 1
9/23/2025 40.93.12.29 US 1
9/23/2025 40.93.14.15 US 1
9/23/2025 40.93.14.20 US 1