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

Network: AMAZON-02

This page shows DMARC authentication failures originating from the AMAZON-02 network. Learn more about this data.

Network Information
Owner:
Amazon
Org ID:
AMAZON-4
Address:
1918 8th Ave, SEATTLE, WA 98101-1244
Countries:
US
Unique IPs:
9
CIDR:
72.21.192.0/19

Analysis

This network has contributed 9 unique IP addresses across 9 failed authentication events, accounting for 9 messages. Activity spans from July 11, 2025 to October 3, 2025, with peak volume in July 2025 (4 events). The top countries by failure volume are United States (100%). The most active source IPs from this network include 72.21.217.11 (1 failure), 72.21.217.114 (1 failure), 72.21.217.100 (1 failure). Failures from AMAZON-02 (Amazon) 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
Date โ–ฒ Source IP Country Messages
7/11/2025 72.21.217.70 US 1
7/17/2025 72.21.217.81 US 1
7/23/2025 72.21.217.11 US 1
7/23/2025 72.21.217.72 US 1
8/1/2025 72.21.217.74 US 1
9/24/2025 72.21.217.114 US 1
9/26/2025 72.21.217.100 US 1
10/3/2025 72.21.217.117 US 1
10/3/2025 72.21.217.16 US 1
Countries