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

Network: DB3 SERVICOS DE TELECOMUNICACOES S.A

This page shows DMARC authentication failures originating from the DB3 SERVICOS DE TELECOMUNICACOES S.A network. Learn more about this data.

Network Information
WHOIS Owner:
DB3 SERVICOS DE TELECOMUNICACOES S.A
Countries:
BR
Unique IPs:
1
CIDR:
170.81.192.0/22

Analysis

This network has contributed 1 unique IP address across 1 failed authentication event, accounting for 1 message. Activity from this network was observed on June 16, 2026. The top countries by failure volume are Brazil (100%). The most active source IP from this network includes 170.81.193.10 (1 failure). A single IP dominates activity from DB3 SERVICOS DE TELECOMUNICACOES S.A, suggesting a concentrated or persistent source rather than distributed infrastructure.

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