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 501-550 of 9,818 (failures, affecting 12,565 messages)
Date ▼ Source IP Country Messages
10/24/2025 40.93.23.88 US 1
10/24/2025 40.93.23.92 US 1
10/24/2025 40.93.2.54 US 1
10/24/2025 40.93.6.104 US 1
10/24/2025 40.93.64.28 IE 1
10/24/2025 40.93.64.5 IE 1
10/24/2025 40.93.64.64 IE 1
10/24/2025 40.93.64.65 IE 1
10/24/2025 40.93.64.84 IE 1
10/24/2025 40.93.64.86 IE 1
10/24/2025 40.93.65.53 NL 1
10/24/2025 40.93.65.55 NL 1
10/24/2025 40.93.65.65 NL 1
10/24/2025 40.93.6.75 US 1
10/24/2025 52.103.136.25 US 1
10/24/2025 52.103.136.8 US 1
10/23/2025 40.93.10.100 US 1
10/23/2025 40.93.10.79 US 1
10/23/2025 40.93.1.105 US 2
10/23/2025 40.93.1.106 US 1
10/23/2025 40.93.12.2 US 1
10/23/2025 40.93.12.6 US 1
10/23/2025 40.93.1.36 US 1
10/23/2025 40.93.14.10 US 1
10/23/2025 40.93.14.102 US 1
10/23/2025 40.93.14.103 US 1
10/23/2025 40.93.14.26 US 1
10/23/2025 40.93.1.72 US 1
10/23/2025 40.93.1.75 US 1
10/23/2025 40.93.1.77 US 2
10/23/2025 40.93.1.78 US 1
10/23/2025 40.93.198.12 US 1
10/23/2025 40.93.20.18 US 1
10/23/2025 40.93.20.96 US 1
10/23/2025 40.93.4.8 US 1
10/23/2025 40.93.6.111 US 1
10/23/2025 40.93.64.28 IE 1
10/23/2025 40.93.65.13 NL 1
10/23/2025 40.93.6.75 US 1
10/23/2025 40.93.76.79 FR 1
10/22/2025 23.103.208.63 US 1
10/22/2025 23.103.209.52 US 1
10/22/2025 40.93.10.96 US 1
10/22/2025 40.93.1.107 US 1
10/22/2025 40.93.1.108 US 1
10/22/2025 40.93.14.101 US 1
10/22/2025 40.93.14.102 US 1
10/22/2025 40.93.14.27 US 1
10/22/2025 40.93.14.28 US 1
10/22/2025 40.93.1.5 US 1