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 101-150 of 9,818 (failures, affecting 12,565 messages)
Date ▼ Source IP Country Messages
1/7/2026 40.93.20.57 US 1
1/7/2026 40.93.20.97 US 1
1/7/2026 40.93.20.98 US 1
1/7/2026 40.93.20.99 US 1
1/7/2026 40.93.23.90 US 1
1/7/2026 40.93.23.93 US 2
1/7/2026 40.93.4.11 US 1
1/7/2026 40.93.6.110 US 1
1/7/2026 40.93.64.14 IE 2
1/7/2026 40.93.64.85 IE 1
1/6/2026 40.107.200.82 US 1
1/6/2026 52.101.53.119 US 1
1/6/2026 52.101.53.83 US 1
12/20/2025 40.93.10.89 US 1
12/20/2025 40.93.23.92 US 1
12/20/2025 40.93.64.70 IE 1
12/20/2025 40.93.64.81 IE 1
12/19/2025 40.93.10.93 US 1
12/19/2025 40.93.12.16 US 1
12/19/2025 40.93.12.5 US 1
12/19/2025 40.93.14.11 US 1
12/19/2025 40.93.20.96 US 2
12/19/2025 40.93.20.97 US 2
12/19/2025 40.93.214.72 SE 1
12/19/2025 40.93.23.25 US 1
12/19/2025 40.93.23.34 US 1
12/19/2025 40.93.4.4 US 2
12/19/2025 40.93.4.6 US 1
12/19/2025 40.93.64.64 IE 1
12/19/2025 40.93.64.67 IE 1
12/19/2025 40.93.64.85 IE 1
12/19/2025 40.93.65.26 NL 1
12/19/2025 40.93.65.53 NL 1
12/19/2025 40.93.65.64 NL 1
12/19/2025 40.93.8.58 US 1
12/19/2025 40.93.8.61 US 1
12/19/2025 52.103.136.8 US 1
12/19/2025 52.103.137.10 US 1
12/19/2025 52.103.145.18 US 1
12/18/2025 40.93.10.103 US 1
12/18/2025 40.93.10.20 US 1
12/18/2025 40.93.10.74 US 1
12/18/2025 40.93.1.1 US 1
12/18/2025 40.93.12.18 US 1
12/18/2025 40.93.12.2 US 1
12/18/2025 40.93.12.21 US 1
12/18/2025 40.93.12.22 US 1
12/18/2025 40.93.12.4 US 1
12/18/2025 40.93.12.7 US 1
12/18/2025 40.93.14.100 US 1