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:
AU CA FR DE IN IE GB US
Unique IPs:
59
CIDRs:
13.200.0.0/13, 13.208.0.0/12, 13.224.0.0/12, 13.24.0.0/13, 13.48.0.0/13, 13.32.0.0/12, 13.56.0.0/14, (more)

Analysis

This network has contributed 59 unique IP addresses across 1,652 failed authentication events, accounting for 47,988 messages. Activity spans from March 13, 2024 to June 24, 2026, with peak volume in September 2025 (2,574 events). The top countries by failure volume are United States (93%), Ireland (5%), Canada (2%). The most active source IPs from this network include 35.174.145.124 (16,534 failures), 52.212.19.177 (926 failures), 15.222.110.90 (402 failures). A single IP dominates activity from AT-88-Z (Amazon), suggesting a concentrated or persistent source rather than distributed infrastructure.

Failures Detected from this Network
Showing 951-1,000 of 1,652 failures, affecting 47,988 messages
Date ▼ Source IP Country Messages
6/13/2025 3.231.237.226 ⚠ US 2
6/13/2025 34.223.36.100 ⚠ US 1
6/13/2025 35.174.145.124 ⚠ US 21
6/13/2025 3.93.139.220 US 1
6/13/2025 3.93.243.176 US 2
6/13/2025 52.212.19.177 ⚠ IE 1
6/12/2025 13.42.61.32 ⚠ GB 1
6/12/2025 15.222.110.90 ⚠ CA 5
6/12/2025 3.132.108.44 ⚠ US 1
6/12/2025 35.174.145.124 ⚠ US 89
6/12/2025 52.212.19.177 ⚠ IE 11
6/11/2025 15.222.110.90 ⚠ CA 6
6/11/2025 18.210.90.90 US 1
6/11/2025 3.231.237.226 ⚠ US 1
6/11/2025 35.174.145.124 ⚠ US 90
6/11/2025 52.212.19.177 ⚠ IE 8
6/6/2025 3.231.237.226 ⚠ US 1
6/6/2025 34.210.15.192 ⚠ US 1
6/6/2025 35.174.145.124 ⚠ US 87
6/6/2025 3.93.139.220 US 1
6/6/2025 3.93.93.217 ⚠ US 1
6/6/2025 52.0.67.109 ⚠ US 2
6/6/2025 52.212.19.177 ⚠ IE 1
6/4/2025 15.222.110.90 ⚠ CA 3
6/4/2025 18.210.90.90 US 15
6/4/2025 3.109.187.96 ⚠ IN 3
6/4/2025 3.123.5.129 ⚠ DE 2
6/4/2025 3.132.108.44 ⚠ US 4
6/4/2025 3.132.222.232 ⚠ US 5
6/4/2025 3.21.178.168 US 1
6/4/2025 3.231.237.226 ⚠ US 3
6/4/2025 34.210.15.192 ⚠ US 2
6/4/2025 34.223.36.100 ⚠ US 1
6/4/2025 34.223.36.101 ⚠ US 6
6/4/2025 35.174.145.124 ⚠ US 674
6/4/2025 3.93.93.216 ⚠ US 4
6/4/2025 3.93.93.217 ⚠ US 1
6/4/2025 52.0.67.109 ⚠ US 3
6/4/2025 52.212.19.177 ⚠ IE 30
6/4/2025 52.89.255.11 ⚠ US 2
5/28/2025 15.222.110.90 ⚠ CA 10
5/28/2025 3.132.108.44 ⚠ US 4
5/28/2025 3.132.222.232 ⚠ US 3
5/28/2025 34.210.15.192 ⚠ US 4
5/28/2025 35.174.145.124 ⚠ US 118
5/28/2025 52.212.19.177 ⚠ IE 11
5/28/2025 52.89.255.11 ⚠ US 3
5/23/2025 15.222.110.90 ⚠ CA 3
5/23/2025 34.223.36.10 ⚠ US 1
5/23/2025 35.174.145.124 ⚠ US 43
Countries