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

Network: DNIC-140-017

This page shows DMARC authentication failures originating from the DNIC-140-017 network. Learn more about this data.

Network Information
Org ID:
USDDD
Address:
3990 E. Broad Street, Columbus, OH 43218
Countries:
US
Unique IPs:
8
CIDR:
140.17.0.0/16

Analysis

This network has contributed 8 unique IP addresses across 9 failed authentication events, accounting for 9 messages. Activity spans from May 28, 2025 to April 9, 2026, with peak volume in September 2025 (2 events). The top countries by failure volume are United States (100%). The most active source IPs from this network include 140.17.137.229 (2 failures), 140.17.137.224 (1 failure), 140.17.113.232 (1 failure). Failures from DNIC-140-017 are concentrated in a single country, which may indicate a targeted campaign or regionally hosted infrastructure.

Failures Detected from this Network
Showing 1-9 of 9 failures, affecting 9 messages
Countries