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 251-300 of 9,818 (failures, affecting 12,565 messages)
Date ▼ Source IP Country Messages
12/5/2025 40.93.65.52 NL 1
12/5/2025 40.93.65.54 NL 1
12/5/2025 40.93.65.71 NL 1
12/5/2025 40.93.76.75 FR 1
12/5/2025 52.103.136.25 US 1
12/5/2025 52.103.136.9 US 1
12/4/2025 40.93.10.89 US 1
12/4/2025 40.93.10.95 US 2
12/4/2025 40.93.1.1 US 1
12/4/2025 40.93.1.111 US 1
12/4/2025 40.93.12.1 US 1
12/4/2025 40.93.12.2 US 1
12/4/2025 40.93.12.3 US 1
12/4/2025 40.93.14.10 US 1
12/4/2025 40.93.14.102 US 1
12/4/2025 40.93.14.28 US 1
12/4/2025 40.93.14.43 US 1
12/4/2025 40.93.14.96 US 3
12/4/2025 40.93.20.51 US 1
12/4/2025 40.93.20.97 US 1
12/4/2025 40.93.2.31 US 1
12/4/2025 40.93.23.34 US 1
12/4/2025 40.93.23.90 US 2
12/4/2025 40.93.23.98 US 1
12/4/2025 40.93.2.54 US 1
12/4/2025 40.93.4.0 US 1
12/4/2025 40.93.4.15 US 1
12/4/2025 40.93.6.105 US 1
12/4/2025 40.93.6.106 US 1
12/4/2025 40.93.6.107 US 1
12/4/2025 40.93.6.38 US 1
12/4/2025 40.93.65.11 NL 1
12/4/2025 40.93.65.30 NL 1
12/4/2025 40.93.69.27 FR 1
12/4/2025 40.93.81.75 NO 1
12/4/2025 52.101.193.56 US 1
12/3/2025 40.107.201.85 US 1
12/3/2025 40.93.10.95 US 1
12/3/2025 40.93.1.110 US 1
12/3/2025 40.93.12.21 US 1
12/3/2025 40.93.12.3 US 1
12/3/2025 40.93.14.15 US 1
12/3/2025 40.93.14.25 US 1
12/3/2025 40.93.14.43 US 1
12/3/2025 40.93.1.76 US 2
12/3/2025 40.93.1.78 US 1
12/3/2025 40.93.195.77 US 1
12/3/2025 40.93.201.107 US 1
12/3/2025 40.93.214.74 SE 1
12/3/2025 40.93.23.89 US 1