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 1,583 failed authentication events, accounting for 46,825 messages. Activity spans from March 13, 2024 to May 22, 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 (16,073 failures), 52.212.19.177 (909 failures), 15.222.110.90 (393 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 251-300 of 1,583 failures, affecting 46,825 messages
Date ▼ Source IP Country Messages
12/18/2025 35.174.145.124 ⚠ US 71
12/18/2025 52.212.19.177 ⚠ IE 1
12/17/2025 15.222.110.90 ⚠ CA 2
12/17/2025 18.210.90.90 US 1
12/17/2025 35.174.145.124 ⚠ US 111
12/17/2025 52.212.19.177 ⚠ IE 3
12/16/2025 35.174.145.124 ⚠ US 16
12/16/2025 3.93.93.217 ⚠ US 1
12/13/2025 15.222.110.90 ⚠ CA 5
12/13/2025 35.174.145.124 ⚠ US 29
12/13/2025 52.212.19.177 ⚠ IE 3
12/12/2025 15.222.110.90 ⚠ CA 5
12/12/2025 3.132.108.44 ⚠ US 3
12/12/2025 3.132.222.232 ⚠ US 1
12/12/2025 3.231.237.226 ⚠ US 1
12/12/2025 35.174.145.124 ⚠ US 106
12/12/2025 52.212.19.177 ⚠ IE 6
12/11/2025 15.222.110.90 ⚠ CA 2
12/11/2025 35.174.145.124 ⚠ US 97
12/11/2025 52.0.67.109 ⚠ US 1
12/11/2025 52.11.209.211 ⚠ US 1
12/11/2025 52.89.255.11 ⚠ US 1
12/10/2025 3.132.108.44 ⚠ US 2
12/10/2025 3.132.222.232 ⚠ US 1
12/10/2025 3.231.237.226 ⚠ US 1
12/10/2025 34.210.15.192 ⚠ US 3
12/10/2025 35.174.145.124 ⚠ US 90
12/10/2025 3.93.93.216 ⚠ US 2
12/10/2025 52.212.19.177 ⚠ IE 1
12/9/2025 18.210.90.90 US 1
12/9/2025 35.174.145.124 ⚠ US 47
12/9/2025 52.212.19.177 ⚠ IE 1
12/6/2025 15.222.110.90 ⚠ CA 4
12/6/2025 18.210.90.90 US 1
12/6/2025 35.174.145.124 ⚠ US 89
12/6/2025 52.212.19.177 ⚠ IE 6
12/5/2025 13.42.61.32 ⚠ GB 1
12/5/2025 15.222.110.90 ⚠ CA 7
12/5/2025 3.132.108.44 ⚠ US 1
12/5/2025 3.132.222.232 ⚠ US 1
12/5/2025 34.210.15.192 ⚠ US 1
12/5/2025 34.223.36.10 ⚠ US 1
12/5/2025 35.174.145.124 ⚠ US 247
12/5/2025 3.93.93.217 ⚠ US 1
12/5/2025 52.212.19.177 ⚠ IE 8
12/4/2025 15.222.110.90 ⚠ CA 2
12/4/2025 3.132.108.44 ⚠ US 4
12/4/2025 3.132.222.232 ⚠ US 3
12/4/2025 3.231.237.226 ⚠ US 2
12/4/2025 34.210.15.192 ⚠ US 5
Countries