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 351-400 of 9,818 (failures, affecting 12,565 messages)
Date ▼ Source IP Country Messages
11/21/2025 40.93.64.84 IE 2
11/21/2025 40.93.64.87 IE 1
11/21/2025 40.93.65.6 NL 1
11/21/2025 40.93.69.27 FR 1
11/21/2025 40.93.76.75 FR 1
11/21/2025 40.93.8.33 US 1
11/21/2025 40.93.8.57 US 1
11/21/2025 40.93.8.58 US 1
11/21/2025 52.103.136.8 US 1
11/20/2025 40.107.201.18 US 1
11/20/2025 40.93.10.100 US 1
11/20/2025 40.93.10.101 US 1
11/20/2025 40.93.10.23 US 1
11/20/2025 40.93.10.79 US 1
11/20/2025 40.93.10.96 US 2
11/20/2025 40.93.1.106 US 1
11/20/2025 40.93.1.110 US 1
11/20/2025 40.93.1.111 US 1
11/20/2025 40.93.12.52 US 1
11/20/2025 40.93.1.38 US 1
11/20/2025 40.93.14.27 US 2
11/20/2025 40.93.14.29 US 1
11/20/2025 40.93.14.99 US 2
11/20/2025 40.93.1.74 US 1
11/20/2025 40.93.1.78 US 1
11/20/2025 40.93.1.79 US 1
11/20/2025 40.93.20.100 US 1
11/20/2025 40.93.20.102 US 1
11/20/2025 40.93.20.27 US 1
11/20/2025 40.93.20.58 US 1
11/20/2025 40.93.20.59 US 1
11/20/2025 40.93.23.98 US 1
11/20/2025 40.93.4.10 US 1
11/20/2025 40.93.4.14 US 1
11/20/2025 40.93.4.9 US 1
11/20/2025 40.93.6.104 US 1
11/20/2025 40.93.6.109 US 1
11/20/2025 40.93.6.110 US 1
11/20/2025 40.93.6.34 US 1
11/20/2025 40.93.64.14 IE 1
11/20/2025 40.93.65.10 NL 1
11/20/2025 40.93.65.13 NL 1
11/20/2025 40.93.6.72 US 1
11/20/2025 40.93.6.73 US 1
11/20/2025 40.93.69.29 FR 1
11/20/2025 40.93.8.38 US 1
11/20/2025 52.101.52.34 US 1
11/19/2025 40.93.10.91 US 1
11/19/2025 40.93.12.22 US 1
11/19/2025 40.93.12.7 US 1