Shame on you, stupid spammers.. Sh4meful  DMARC Spoof Detection
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Network: AT-88-Z

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:
33
CIDRs:
13.24.0.0/13, 13.48.0.0/13, 13.32.0.0/12, 13.56.0.0/14, 18.128.0.0/9, 18.32.0.0/11, 18.64.0.0/10, (more)

Analysis

This network has contributed 33 unique IP addresses across 170 failed authentication events, accounting for 253 messages. Activity spans from March 13, 2024 to July 24, 2026, with peak volume in September 2024 (21 events). The top countries by failure volume are United States (99%), Germany (1%), France (0%). The most active source IPs from this network include 18.210.90.90 (56 failures), 3.93.243.176 (24 failures), 3.93.139.220 (19 failures). The distribution across AT-88-Z (Amazon) suggests mixed or general-purpose infrastructure.

Failures Detected from this Network
Showing 1-50 of 170 failures, affecting 253 messages
Date ▼ Source IP Country Messages
6/24/2026 3.93.139.220 US 1
6/20/2026 18.210.90.90 US 3
6/17/2026 3.93.139.220 US 1
6/5/2026 3.223.108.97 US 1
6/4/2026 18.189.152.83 US 1
6/3/2026 3.93.243.176 US 1
5/14/2026 18.189.152.83 US 1
5/13/2026 3.93.243.176 US 1
4/10/2026 3.223.108.97 US 1
4/9/2026 13.58.249.20 US 1
4/8/2026 3.93.243.176 US 1
3/27/2026 18.210.90.90 US 2
3/26/2026 18.189.152.83 US 1
3/25/2026 3.93.139.220 US 1
3/14/2026 18.210.90.90 US 3
3/13/2026 3.223.108.97 US 1
3/12/2026 3.21.178.168 US 1
3/11/2026 18.210.90.90 US 2
3/11/2026 3.93.243.176 US 1
3/10/2026 52.27.124.21 US 1
2/28/2026 18.210.90.90 US 3
2/25/2026 18.210.90.90 US 2
2/25/2026 3.93.243.176 US 1
1/30/2026 18.210.90.90 US 3
1/27/2026 18.210.90.90 US 2
1/16/2026 18.210.90.90 US 3
1/13/2026 18.210.90.90 US 2
1/9/2026 18.210.90.90 US 3
1/6/2026 18.210.90.90 US 2
12/19/2025 3.223.108.97 US 1
12/17/2025 18.210.90.90 US 1
12/9/2025 18.210.90.90 US 1
12/6/2025 18.210.90.90 US 1
12/3/2025 18.210.90.90 US 1
12/3/2025 3.93.243.176 US 1
12/2/2025 18.210.90.90 US 1
12/2/2025 52.27.124.21 US 1
11/21/2025 3.223.108.97 US 1
11/19/2025 18.210.90.90 US 1
11/19/2025 3.93.243.176 US 1
11/18/2025 18.210.90.90 US 1
11/18/2025 52.25.230.42 US 1
11/17/2025 35.180.3.224 FR 1
11/14/2025 3.223.108.97 US 1
11/12/2025 18.210.90.90 US 1
10/23/2025 52.37.228.167 US 1
10/22/2025 3.93.139.220 US 1
10/9/2025 52.89.220.23 US 1
10/8/2025 3.93.139.220 US 1
10/8/2025 52.37.228.167 US 1
Countries