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 5,351-5,400 of 10,359 failures, affecting 13,175 messages
Date โ–ผ Source IP Country Messages
12/19/2024 104.47.73.170 โš  US 1
12/19/2024 104.47.73.173 โš  US 2
12/19/2024 104.47.73.175 โš  US 2
12/19/2024 104.47.73.176 โš  US 1
12/19/2024 104.47.73.177 โš  US 2
12/19/2024 104.47.73.40 โš  US 1
12/19/2024 104.47.73.41 โš  US 1
12/19/2024 104.47.74.41 โš  US 1
12/19/2024 104.47.74.42 โš  US 2
12/19/2024 104.47.74.44 โš  US 1
12/19/2024 104.47.74.48 โš  US 1
12/19/2024 104.47.74.49 โš  US 2
12/19/2024 20.245.215.68 โš  US 1
12/19/2024 20.245.215.69 โš  US 1
12/19/2024 23.103.208.56 โš  US 1
12/19/2024 23.103.208.74 โš  US 1
12/19/2024 2603:10b6:208:23d::35 โš  US 2
12/19/2024 2603:10b6:303:89::29 โš  US 1
12/19/2024 2603:10b6:510:174::8 โš  US 1
12/19/2024 2603:10b6:610:118::19 โš  US 1
12/19/2024 2603:10b6:610:1ed::10 โš  US 1
12/19/2024 40.107.100.108 โš  US 1
12/19/2024 40.107.100.119 โš  US 1
12/19/2024 40.107.100.125 โš  US 1
12/19/2024 40.107.100.137 โš  US 1
12/19/2024 40.107.101.107 โš  US 1
12/19/2024 40.107.101.117 โš  US 1
12/19/2024 40.107.102.126 โš  US 1
12/19/2024 40.107.158.120 โš  NO 1
12/19/2024 40.107.158.93 โš  NO 1
12/19/2024 40.107.200.88 โš  US 1
12/19/2024 40.107.20.88 โš  IE 1
12/19/2024 40.107.212.105 โš  US 1
12/19/2024 40.107.212.112 โš  US 1
12/19/2024 40.107.212.135 โš  US 1
12/19/2024 40.107.212.96 โš  US 1
12/19/2024 40.107.212.99 โš  US 1
12/19/2024 40.107.215.93 โš  SG 1
12/19/2024 40.107.220.112 โš  US 1
12/19/2024 40.107.220.121 โš  US 1
12/19/2024 40.107.220.127 โš  US 1
12/19/2024 40.107.220.128 โš  US 2
12/19/2024 40.107.220.67 โš  US 1
12/19/2024 40.107.223.102 โš  US 1
12/19/2024 40.107.223.103 โš  US 1
12/19/2024 40.107.223.110 โš  US 1
12/19/2024 40.107.223.119 โš  US 1
12/19/2024 40.107.223.122 โš  US 1
12/19/2024 40.107.223.70 โš  US 1
12/19/2024 40.107.223.75 โš  US 1