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 1-50 of 9,818 (failures, affecting 12,565 messages)
Date ▼ Source IP Country Messages
1/31/2026 40.93.10.90 US 1
1/31/2026 40.93.14.99 US 1
1/31/2026 40.93.1.76 US 1
1/30/2026 40.93.10.97 US 1
1/30/2026 40.93.1.79 US 1
1/30/2026 40.93.214.78 SE 1
1/30/2026 40.93.23.89 US 1
1/30/2026 40.93.4.15 US 1
1/30/2026 40.93.6.107 US 1
1/30/2026 40.93.81.78 NO 1
1/29/2026 40.93.10.102 US 1
1/29/2026 40.93.10.94 US 1
1/29/2026 40.93.1.109 US 1
1/29/2026 40.93.1.77 US 1
1/29/2026 40.93.20.99 US 1
1/29/2026 40.93.64.11 IE 1
1/29/2026 40.93.64.3 IE 1
1/28/2026 40.93.1.105 US 1
1/28/2026 40.93.12.0 US 1
1/28/2026 40.93.12.1 US 1
1/28/2026 40.93.14.29 US 1
1/28/2026 40.93.214.73 SE 1
1/28/2026 40.93.214.96 SE 1
1/28/2026 40.93.4.1 US 2
1/28/2026 40.93.4.13 US 1
1/28/2026 40.93.4.15 US 1
1/28/2026 40.93.4.2 US 1
1/28/2026 40.93.4.5 US 1
1/28/2026 40.93.64.13 IE 1
1/26/2026 40.107.208.27 US 1
1/17/2026 40.93.12.3 US 1
1/17/2026 40.93.14.102 US 1
1/17/2026 40.93.20.101 US 1
1/17/2026 40.93.20.97 US 1
1/17/2026 40.93.4.3 US 1
1/16/2026 40.93.10.103 US 1
1/16/2026 40.93.12.5 US 1
1/16/2026 40.93.131.6 IN 1
1/16/2026 40.93.132.24 IN 1
1/16/2026 40.93.20.103 US 1
1/16/2026 40.93.214.98 SE 1
1/16/2026 40.93.64.67 IE 1
1/16/2026 40.93.65.67 NL 1
1/16/2026 40.93.65.71 NL 1
1/16/2026 40.93.81.76 NO 1
1/16/2026 40.93.81.78 NO 1
1/15/2026 40.93.10.92 US 1
1/15/2026 40.93.12.0 US 1
1/15/2026 40.93.14.98 US 1
1/15/2026 40.93.214.75 SE 1