ArchivedNo longer active, data collection ran March 2024 to September 2026|9,442 records|3,409 source IPs|138 countriesAbout this archive
Shame on you, stupid spammers..Sh4meful  DMARC Spoof Detection

Network: M T N TELECOMUNICACOES LTDA

This page shows DMARC authentication failures originating from the M T N TELECOMUNICACOES LTDA network. Learn more about this data.

Network Information
WHOIS Owner:
M T N TELECOMUNICACOES LTDA
Countries:
BR
Unique IPs:
1
CIDR:
186.192.67.0/25

Analysis

This network has contributed 1 unique IP address across 1 failed authentication event, accounting for 4 messages. Activity from this network was observed on February 17, 2025. The top countries by failure volume are Brazil (100%). The most active source IP from this network includes 186.192.67.60 (1 failure). A single IP dominates activity from M T N TELECOMUNICACOES LTDA, suggesting a concentrated or persistent source rather than distributed infrastructure.

Failures Detected from this Network
Showing 1-1 of 1 failures, affecting 4 messages
Date โ–ผ Source IP Country Messages
2/17/2025 186.192.67.60 BR4
Countries