Network: AT-88-Z

ℹ️ Annotation: Amazon Web Services (AWS)

This is (part of) the AWS public cloud. Some email protection services run in AWS, but it is also an attack/spam vector.

Last updated: 1/29/2026

This page shows DMARC authentication failures originating from the AT-88-Z network. Learn more about this data.

Network Information

Owner:: Amazon
Org ID:: AT-88-Z
Address:: 410 Terry Ave N., Seattle, WA 98109
Countries:: FR DE US

Unique IPs:: 31

CIDRs:: 18.128.0.0/9, 18.32.0.0/11, 18.64.0.0/10, 18.128.0.0/9, 18.64.0.0/10, 18.32.0.0/11, (more)

Analysis

This network has contributed 31 unique IP addresses across 156 failed authentication events, accounting for 236 messages. Activity from this network spans from March 13, 2024 to March 24, 2026. Activity from AT-88-Z (Amazon) has been observed from 3 countries, including France, Germany, United States.

Failures Detected from this Network

Showing 101-150 of 156 (failures, affecting 236 messages)

Show Confoundersⓘ

Date ▼	Source IP	Country	Messages
3/19/2025	35.89.44.34	US	1
3/14/2025	35.89.44.38	US	1
3/12/2025	35.89.44.34	US	3
3/12/2025	35.89.44.36	US	1
3/12/2025	52.25.230.42	US	1
2/28/2025	52.11.246.83	US	1
2/26/2025	3.93.139.220	US	1
2/26/2025	52.27.124.21	US	1
2/14/2025	3.93.243.176	US	1
2/14/2025	52.11.246.83	US	1
1/17/2025	18.210.90.90	US	1
1/17/2025	52.11.246.83	US	1
1/8/2025	52.27.124.21	US	1
12/20/2024	52.25.230.42	US	1
12/19/2024	18.210.90.90	US	1
12/19/2024	3.93.139.220	US	1
12/19/2024	3.93.243.176	US	1
12/19/2024	52.25.230.42	US	1
12/18/2024	18.210.90.90	US	4
12/18/2024	3.93.139.220	US	1
12/18/2024	3.93.243.176	US	1
12/18/2024	52.25.230.42	US	1
12/17/2024	18.210.90.90	US	3
12/11/2024	52.27.124.21	US	1
12/10/2024	3.93.243.176	US	1
12/4/2024	3.93.243.176	US	1
11/26/2024	18.208.22.129	US	1
11/26/2024	18.208.22.149	US	1
11/22/2024	3.93.243.176	US	1
11/20/2024	3.93.243.176	US	1
11/20/2024	52.11.246.83	US	1
11/12/2024	3.93.139.220	US	1
11/12/2024	52.11.246.83	US	1
10/30/2024	52.11.246.83	US	1
10/30/2024	52.27.124.21	US	1
10/23/2024	3.93.243.176	US	1
10/23/2024	52.27.124.21	US	1
10/1/2024	18.208.22.127	US	1
9/27/2024	18.210.90.90	US	4
9/27/2024	3.93.139.220	US	1
9/27/2024	52.11.246.83	US	1
9/27/2024	52.25.230.42	US	1
9/25/2024	18.210.90.90	US	1
9/25/2024	52.11.246.83	US	1
9/20/2024	18.210.90.90	US	1
9/20/2024	3.93.243.176	US	1
9/20/2024	52.25.230.42	US	2
9/20/2024	52.27.124.21	US	1
9/18/2024	18.210.90.90	US	1
9/18/2024	3.93.139.220	US	2

Countries