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

Network: JR & JS ENGENHARIA E COM?RCIO LTDA

This page shows DMARC authentication failures originating from the JR & JS ENGENHARIA E COM?RCIO LTDA network. Learn more about this data.

Network Information
WHOIS Owner:
JR & JS ENGENHARIA E COM?RCIO LTDA
Countries:
BR
Unique IPs:
1
CIDR:
186.224.192.0/20

Analysis

This network has contributed 1 unique IP address across 1 failed authentication event, accounting for 3 messages. Activity from this network was observed on June 23, 2026. The top countries by failure volume are Brazil (100%). The most active source IP from this network includes 186.224.201.54 (1 failure). A single IP dominates activity from JR & JS ENGENHARIA E COM?RCIO LTDA, suggesting a concentrated or persistent source rather than distributed infrastructure.

Failures Detected from this Network
Showing 1-1 of 1 failures, affecting 3 messages
Countries