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

Network: LEIDOS-149-8-0-0-16

This page shows DMARC authentication failures originating from the LEIDOS-149-8-0-0-16 network. Learn more about this data.

Network Information
Org ID:
LEIDO
Address:
1750 Presidents Street, Reston, VA 20190
Countries:
US
Unique IPs:
4
CIDR:
149.8.0.0/16

Analysis

This network has contributed 4 unique IP addresses across 10 failed authentication events, accounting for 29 messages. Activity spans from February 14, 2025 to October 1, 2025, with peak volume in September 2025 (9 events). The top countries by failure volume are United States (100%). The most active source IPs from this network include 149.8.13.136 (6 failures), 149.8.13.133 (5 failures), 149.8.13.135 (1 failure). Failures from LEIDOS-149-8-0-0-16 are concentrated in a single country, which may indicate a targeted campaign or regionally hosted infrastructure.

Failures Detected from this Network
Showing 1-10 of 10 failures, affecting 29 messages
Date โ–ผ Source IP Country Messages
10/1/2025 149.8.13.133 US 1
10/1/2025 149.8.13.136 US 5
9/26/2025 149.8.13.133 US 4
9/26/2025 149.8.13.135 US 2
9/26/2025 149.8.13.136 US 3
9/24/2025 149.8.13.133 US 4
9/24/2025 149.8.13.136 US 3
9/17/2025 149.8.13.133 US 4
9/17/2025 149.8.13.136 US 2
2/14/2025 149.8.132.36 US 1
Countries