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

IP Address: 2a01:111:f403:c105::5

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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Geolocation Information
Country:
US United States
Region:
Illinois
City:
Chicago
Coordinates:
41.8835, -87.6305
WHOIS Information
Network Name:
UK-MICROSOFT-20060601
Owner:
ORG-MA42-RIPE
Reverse DNS:
mail-northcentralusazlp170120005.outbound.protection.outlook.com
Last updated: 2/5/2026
Failures Detected from this IP
Showing 51-83 of 83 (failures, affecting 295 messages)
Date ▲ Messages
10/11/2025 1
10/21/2025 2
11/12/2025 1
11/13/2025 2
11/14/2025 3
11/15/2025 2
11/18/2025 1
11/19/2025 17
11/20/2025 2
11/21/2025 3
11/22/2025 1
12/2/2025 4
12/3/2025 5
12/4/2025 3
12/5/2025 4
12/6/2025 1
12/10/2025 5
12/11/2025 2
12/12/2025 3
12/13/2025 1
12/16/2025 1
12/17/2025 6
12/18/2025 1
12/19/2025 4
1/6/2026 2
1/7/2026 4
1/8/2026 3
1/14/2026 1
1/15/2026 1
1/27/2026 1
1/28/2026 1
1/29/2026 1
1/30/2026 2