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

IP Address: 187.255.97.16

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.

(More)

Geolocation Information
Country:
BR Brazil
Region:
São Paulo
City:
São Paulo
Coordinates:
-23.5475, -46.6361
WHOIS Information
Network Name:
Claro NXT Telecomunicacoes Ltda
CIDR:
187.255.0.0/16
Owner:
Claro NXT Telecomunicacoes Ltda
Reverse DNS:
bbff6110.virtua.com.br
Last updated: 2/5/2026
Failures Detected from this IP
Showing 1-1 of 1 (failures, affecting 8 messages)