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

IP Address: 216.71.143.91 âš  Network Confounder

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
Coordinates:
37.751, -97.822
WHOIS Information
Network Name:
CISL-7
CIDR:
216.71.128.0/19
Reverse DNS:
esa.hc5995-21.iphmx.com
Last updated: 2/5/2026
Failures Detected from this IP
Showing 1-26 of 26 (failures, affecting 45 messages)
Date â–¼ Messages
7/2/2025 1
6/27/2025 3
6/18/2025 1
6/6/2025 1
6/4/2025 4
5/2/2025 4
12/18/2024 2
12/11/2024 1
12/5/2024 1
12/4/2024 1
11/21/2024 1
11/20/2024 2
11/13/2024 1
11/12/2024 1
11/6/2024 1
10/23/2024 3
9/27/2024 3
9/20/2024 1
9/13/2024 3
9/6/2024 1
8/21/2024 1
8/7/2024 1
6/12/2024 2
5/31/2024 2
4/17/2024 2
3/13/2024 1