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

Network: MUNDIVOX DO BRASIL LTDA

This page shows DMARC authentication failures originating from the MUNDIVOX DO BRASIL LTDA network. Learn more about this data.

Network Information
WHOIS Owner:
MUNDIVOX DO BRASIL LTDA
Countries:
BR
Unique IPs:
4
CIDRs:
187.102.128.0/18, 200.142.112.0/20, (more)

Analysis

This network has contributed 4 unique IP addresses across 5 failed authentication events, accounting for 13 messages. Activity spans from January 20, 2026 to August 4, 2026, with peak volume in June 2026 (3 events). The top countries by failure volume are Brazil (100%). The most active source IPs from this network include 200.142.101.197 (2 failures), 187.102.151.67 (1 failure), 200.142.103.108 (1 failure). Failures from MUNDIVOX DO BRASIL LTDA are concentrated in a single country, which may indicate a targeted campaign or regionally hosted infrastructure.

Failures Detected from this Network
Showing 1-5 of 5 failures, affecting 13 messages
Countries