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

IP Address: 186.221.66.13

This page shows DMARC authentication failure data for this IP address. Learn more about this data.

Geolocation Information
Country:
BR Brazil
Region:
Rio de Janeiro
City:
Rio de Janeiro
Coordinates:
-22.9072, -43.1883
WHOIS Information
Network Name:
Claro NXT Telecomunicacoes Ltda
CIDR:
186.220.0.0/14
Owner:
Claro NXT Telecomunicacoes Ltda
Reverse DNS:
badd420d.virtua.com.br
Last updated: 2/5/2026

Analysis

This IP was observed on a single date: August 27, 2025. It has been associated with 1 failed authentication event affecting 4 messages โ€” a single isolated event. The IP belongs to Claro NXT Telecomunicacoes Ltda, a network with activity associated with Brazil.

Failures Detected from this IP
Showing 1-1 of 1 failures, affecting 4 messages
External Reputation Lookups

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