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:
3,378
CIDRs:
104.40.0.0/13, 20.0.0.0/11, (more)

Analysis

This network has contributed 3,378 unique IP addresses across 10,572 failed authentication events, accounting for 13,398 messages. Activity spans from March 12, 2024 to June 24, 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 5,701-5,750 of 10,572 failures, affecting 13,398 messages
Date โ–ผ Source IP Country Messages
12/19/2024 40.93.6.27 โš  US 1
12/19/2024 40.93.6.28 โš  US 2
12/19/2024 40.93.6.29 โš  US 2
12/19/2024 40.93.6.31 โš  US 1
12/19/2024 40.93.6.38 โš  US 2
12/19/2024 40.93.64.30 โš  IE 1
12/19/2024 40.93.65.28 โš  NL 1
12/19/2024 40.93.6.6 โš  US 1
12/19/2024 40.95.21.82 โš  US 1
12/19/2024 40.95.31.61 โš  US 1
12/19/2024 40.95.31.65 โš  US 1
12/19/2024 40.95.31.85 โš  US 1
12/19/2024 40.95.32.189 โš  US 1
12/19/2024 40.95.33.76 โš  US 1
12/19/2024 40.95.34.42 โš  US 1
12/19/2024 40.95.35.71 โš  US 1
12/19/2024 40.95.35.88 โš  US 1
12/19/2024 40.95.36.70 โš  US 1
12/19/2024 40.95.37.72 โš  US 1
12/19/2024 40.95.37.87 โš  US 1
12/19/2024 40.95.38.76 โš  US 1
12/19/2024 40.95.45.77 โš  US 1
12/19/2024 40.95.48.47 โš  US 1
12/19/2024 40.95.58.51 โš  AT 1
12/19/2024 52.100.155.200 โš  US 1
12/19/2024 52.100.158.205 โš  US 2
12/19/2024 52.100.159.215 โš  US 1
12/19/2024 52.100.166.206 โš  US 1
12/19/2024 52.100.167.226 โš  US 1
12/19/2024 52.100.171.226 โš  US 1
12/19/2024 52.100.172.216 โš  US 1
12/19/2024 52.100.173.228 โš  US 1
12/19/2024 52.101.152.92 โš  AU 1
12/19/2024 52.101.178.109 โš  NO 1
12/19/2024 52.101.178.76 โš  NO 1
12/19/2024 52.101.180.88 โš  NO 1
12/19/2024 52.101.193.125 โš  US 1
12/19/2024 52.101.193.128 โš  US 1
12/19/2024 52.101.43.118 โš  US 1
12/19/2024 52.101.44.85 โš  US 1
12/19/2024 52.101.44.86 โš  US 1
12/19/2024 52.101.46.85 โš  US 1
12/19/2024 52.101.51.46 โš  US 1
12/19/2024 52.101.51.72 โš  US 1
12/19/2024 52.101.51.84 โš  US 1
12/19/2024 52.101.51.9 โš  US 1
12/19/2024 52.101.56.117 โš  US 1
12/19/2024 52.101.56.71 โš  US 1
12/19/2024 52.101.57.23 โš  US 1
12/19/2024 52.101.62.101 โš  US 1