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

IP Address: 148.163.153.251 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
Region:
California
Coordinates:
34.0544, -118.244
WHOIS Information
Network Name:
PROOFPOINT-NET-NORTH-AMERICA
CIDR:
148.163.128.0/19
Reverse DNS:
mx0b-008e3101.pphosted.com
Last updated: 2/5/2026
Failures Detected from this IP
Showing 1-11 of 11 (failures, affecting 22 messages)
Date â–¼ Messages
7/17/2025 2
7/11/2025 5
6/27/2025 3
3/12/2025 1
2/28/2025 1
12/18/2024 2
12/17/2024 1
12/4/2024 4
11/20/2024 1
11/8/2024 1
10/23/2024 1