Shame on you, stupid spammers.. Sh4meful  DMARC Spoof Detection 🦋 Bluesky

Network: OUL-16

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
Countries:
US
Unique IPs:
7
CIDRs:
135.148.0.0/16, 147.135.0.0/17, (more)
Failures Detected from this Network
Showing 1-11 of 11 (failures, affecting 20 messages)
Date â–² Source IP Country Messages
12/17/2024 135.148.117.235 US 2
12/17/2024 15.204.3.8 US 1
6/16/2025 15.204.227.166 US 2
6/18/2025 15.204.227.166 US 1
6/20/2025 15.204.227.166 US 2
7/14/2025 135.148.115.171 US 3
9/24/2025 147.135.37.223 US 3
9/25/2025 147.135.37.223 US 3
11/13/2025 135.148.97.79 US 1
11/20/2025 15.204.205.244 US 1
11/21/2025 15.204.205.244 US 1