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 451-500 of 9,818 (failures, affecting 12,565 messages)
Date ▼ Source IP Country Messages
11/13/2025 40.93.20.98 US 1
11/13/2025 40.93.20.99 US 1
11/13/2025 40.93.2.31 US 2
11/13/2025 40.93.23.88 US 1
11/13/2025 40.93.4.2 US 1
11/13/2025 40.93.4.8 US 1
11/13/2025 40.93.4.9 US 1
11/13/2025 40.93.6.106 US 1
11/13/2025 40.93.6.72 US 1
11/13/2025 40.93.8.33 US 1
11/13/2025 40.93.8.62 US 1
11/12/2025 40.93.1.33 US 1
11/12/2025 40.93.1.39 US 1
11/12/2025 40.93.14.13 US 1
11/12/2025 40.93.64.27 IE 1
11/12/2025 40.93.65.1 NL 1
11/12/2025 52.101.52.106 US 1
11/12/2025 52.101.85.96 US 1
11/11/2025 40.93.12.51 US 1
11/11/2025 40.93.12.54 US 1
11/11/2025 40.93.20.31 US 1
11/11/2025 40.93.23.90 US 1
11/11/2025 40.93.4.2 US 1
11/11/2025 52.101.53.1 US 1
10/25/2025 40.93.10.96 US 1
10/25/2025 40.93.1.107 US 1
10/25/2025 40.93.1.72 US 1
10/25/2025 40.93.20.101 US 1
10/25/2025 40.93.4.10 US 1
10/25/2025 40.93.4.5 US 1
10/25/2025 40.93.6.109 US 1
10/25/2025 40.93.64.70 IE 1
10/25/2025 40.93.64.85 IE 1
10/24/2025 40.93.10.75 US 1
10/24/2025 40.93.10.99 US 1
10/24/2025 40.93.1.105 US 1
10/24/2025 40.93.12.6 US 1
10/24/2025 40.93.12.7 US 1
10/24/2025 40.93.131.0 IN 3
10/24/2025 40.93.131.28 IN 1
10/24/2025 40.93.131.6 IN 1
10/24/2025 40.93.132.29 IN 1
10/24/2025 40.93.1.74 US 1
10/24/2025 40.93.1.75 US 1
10/24/2025 40.93.1.78 US 1
10/24/2025 40.93.20.102 US 1
10/24/2025 40.93.20.21 US 1
10/24/2025 40.93.214.72 SE 1
10/24/2025 40.93.214.97 SE 1
10/24/2025 40.93.23.39 US 1