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

Network: JUMPSTART-5

This page shows DMARC authentication failures originating from the JUMPSTART-5 network. Learn more about this data.

Network Information
Countries:
US
Unique IPs:
1
CIDR:
174.48.0.0/12

Analysis

This network has contributed 1 unique IP address across 2 failed authentication events, accounting for 2 messages. Activity spans from August 23, 2026 to August 26, 2026, with peak volume in August 2026 (2 events). The top countries by failure volume are United States (100%). The most active source IP from this network includes 174.57.194.48 (2 failures). A single IP dominates activity from JUMPSTART-5, suggesting a concentrated or persistent source rather than distributed infrastructure.

Failures Detected from this Network
Showing 1-2 of 2 failures, affecting 2 messages
Countries