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:
3,325
CIDRs:
104.40.0.0/13, 20.0.0.0/11, (more)

Analysis

This network has contributed 3,325 unique IP addresses across 10,360 failed authentication events, accounting for 13,176 messages. Activity spans from March 12, 2024 to May 1, 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 10,351-10,360 of 10,360 failures, affecting 13,176 messages
Date โ–ผ Source IP Country Messages
3/12/2024 104.47.14.51 โš  US 1
3/12/2024 104.47.18.104 โš  NL 1
3/12/2024 104.47.18.105 โš  NL 2
3/12/2024 104.47.30.104 โš  AT 1
3/12/2024 104.47.51.232 โš  NL 1
3/12/2024 104.47.56.169 โš  US 1
3/12/2024 104.47.56.41 โš  US 2
3/12/2024 104.47.57.169 โš  US 1
3/12/2024 104.47.58.168 โš  US 1
3/12/2024 40.107.212.105 โš  US 1