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

Network: BT-ADSL

This page shows DMARC authentication failures originating from the BT-ADSL network. Learn more about this data.

Network Information
WHOIS Owner:
BT Public Internet Service
Countries:
GB
Unique IPs:
1
CIDR:
213.120.0.0/14

Analysis

This network has contributed 1 unique IP address across 4 failed authentication events, accounting for 5 messages. Activity spans from June 5, 2025 to June 29, 2025, with peak volume in June 2025 (4 events). The top countries by failure volume are United Kingdom (100%). The most active source IP from this network includes 213.120.142.110 (4 failures). A single IP dominates activity from BT-ADSL, suggesting a concentrated or persistent source rather than distributed infrastructure.

Failures Detected from this Network
Showing 1-4 of 4 failures, affecting 5 messages
Countries