Shame on you, stupid spammers.. Sh4meful  DMARC Spoof Detection

Network: MSFT

This page shows DMARC authentication failures originating from the MSFT network. Learn more about this data.

Network Information
Owner:
Microsoft
Org ID:
MSFT
Address:
One Microsoft Way, Redmond, WA 98052
Countries:
AU AT CA FR DE HK IN IE JP NO SG KR SE CH NL AE GB US
Unique IPs:
3,324
CIDRs:
104.40.0.0/13, 20.0.0.0/11, (more)

Analysis

This network has contributed 3,324 unique IP addresses across 10,359 failed authentication events, accounting for 13,175 messages. Activity spans from March 12, 2024 to April 10, 2026, with peak volume in September 2024 (1,998 events). The top countries by failure volume are United States (88%), Ireland (3%), The Netherlands (3%). The most active source IPs from this network include 104.47.57.168 (75 failures), 104.47.58.168 (68 failures), 104.47.56.169 (64 failures). Failures from MSFT (Microsoft) span 18 countries with no dominant source, which is consistent with forwarding infrastructure, relay services, or broadly distributed automated activity.

Failures Detected from this Network
Showing 5,651-5,700 of 10,359 failures, affecting 13,175 messages
Date โ–ผ Source IP Country Messages
12/18/2024 2603:10b6:408:e0::32 โš  US 1
12/18/2024 2603:10b6:610:e4::24 โš  US 1
12/18/2024 2603:10b6:610:e4::29 โš  US 1
12/18/2024 40.107.100.104 โš  US 1
12/18/2024 40.107.100.109 โš  US 1
12/18/2024 40.107.100.117 โš  US 1
12/18/2024 40.107.100.131 โš  US 1
12/18/2024 40.107.100.132 โš  US 1
12/18/2024 40.107.100.57 โš  US 1
12/18/2024 40.107.100.83 โš  US 1
12/18/2024 40.107.100.91 โš  US 1
12/18/2024 40.107.101.124 โš  US 1
12/18/2024 40.107.101.127 โš  US 1
12/18/2024 40.107.101.61 โš  US 1
12/18/2024 40.107.101.78 โš  US 1
12/18/2024 40.107.101.79 โš  US 1
12/18/2024 40.107.101.83 โš  US 1
12/18/2024 40.107.157.128 โš  NO 1
12/18/2024 40.107.158.119 โš  NO 1
12/18/2024 40.107.158.82 โš  NO 1
12/18/2024 40.107.201.13 โš  US 1
12/18/2024 40.107.20.120 โš  IE 1
12/18/2024 40.107.201.94 โš  US 1
12/18/2024 40.107.201.98 โš  US 1
12/18/2024 40.107.20.48 โš  IE 1
12/18/2024 40.107.20.57 โš  IE 1
12/18/2024 40.107.20.61 โš  IE 1
12/18/2024 40.107.220.139 โš  US 1
12/18/2024 40.107.223.103 โš  US 1
12/18/2024 40.107.223.116 โš  US 1
12/18/2024 40.107.223.135 โš  US 2
12/18/2024 40.107.223.99 โš  US 1
12/18/2024 40.107.236.101 โš  US 1
12/18/2024 40.107.236.102 โš  US 1
12/18/2024 40.107.236.108 โš  US 2
12/18/2024 40.107.236.113 โš  US 1
12/18/2024 40.107.236.115 โš  US 1
12/18/2024 40.107.236.124 โš  US 1
12/18/2024 40.107.236.127 โš  US 1
12/18/2024 40.107.236.133 โš  US 1
12/18/2024 40.107.236.51 โš  US 1
12/18/2024 40.107.236.57 โš  US 1
12/18/2024 40.107.236.86 โš  US 1
12/18/2024 40.107.236.97 โš  US 1
12/18/2024 40.107.237.108 โš  US 1
12/18/2024 40.107.237.116 โš  US 2
12/18/2024 40.107.237.129 โš  US 1
12/18/2024 40.107.243.114 โš  US 1
12/18/2024 40.107.243.55 โš  US 1
12/18/2024 40.107.244.101 โš  US 1