Network: AMAZON-05

This page shows DMARC authentication failures originating from the AMAZON-05 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:: 4

CIDR:: 205.251.192.0/18

Analysis

This network has contributed 4 unique IP addresses across 5 failed authentication events, accounting for 6 messages. Activity spans from July 17, 2025 to September 24, 2025, with peak volume in September 2025 (3 events). The top countries by failure volume are United States (100%). The most active source IPs from this network include 205.251.233.161 (2 failures), 205.251.233.38 (1 failure), 205.251.234.33 (1 failure). Failures from AMAZON-05 (Amazon) are concentrated in a single country, which may indicate a targeted campaign or regionally hosted infrastructure.

Failures Detected from this Network

Showing 1-5 of 5 failures, affecting 6 messages

Show Confoundersⓘ

Date ▼	Source IP	Country	Messages
9/24/2025	205.251.234.33	US	1
9/12/2025	205.251.234.37	US	1
9/10/2025	205.251.233.161	US	1
7/23/2025	205.251.233.161	US	1
7/17/2025	205.251.233.38	US	2

Countries

United States