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

IP Address: 191.177.137.18

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

Geolocation Information
Country:
BR Brazil
Region:
Paraná
City:
Curitiba
Coordinates:
-25.5026, -49.2908
WHOIS Information
Network Name:
Claro NXT Telecomunicacoes Ltda
CIDR:
191.176.0.0/14
Owner:
Claro NXT Telecomunicacoes Ltda
Reverse DNS:
bfb18912.virtua.com.br
Last updated: 2/5/2026

Analysis

This IP was observed on a single date: May 9, 2025. It has been associated with 1 failed authentication event affecting 4 messages — 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

Look up this IP in external threat intelligence and reputation databases (opens in new tab):