Shame on you, stupid spammers.. Sh4meful  DMARC Spoof Detection
🦋 Bluesky 🐘 Mastodon

Network: UK-MICROSOFT-20060601

This page shows DMARC authentication failures originating from the UK-MICROSOFT-20060601 network. Learn more about this data.

Network Information
Owner:
Microsoft
WHOIS Owner:
ORG-MA42-RIPE
Countries:
AU AT CA FR DE HK IN IE JP NO SG ZA KR SE CH NL GB US
Unique IPs:
1,072
CIDR:
2a01:111:f400::/40

Analysis

This network has contributed 1,072 unique IP addresses across 6,803 failed authentication events, accounting for 14,188 messages. Activity spans from March 12, 2024 to June 24, 2026, with peak volume in September 2025 (3,443 events). The top countries by failure volume are United States (94%), Japan (2%), Ireland (1%). The most active source IPs from this network include 2a01:111:f403:c110::1 (380 failures), 2a01:111:f403:c112::5 (379 failures), 2a01:111:f403:c105::7 (369 failures). Failures from UK-MICROSOFT-20060601 (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 6,251-6,300 of 6,803 failures, affecting 14,188 messages
Date ▼ Source IP Country Messages
11/7/2024 2a01:111:f403:2408::717 ⚠ US 1
11/7/2024 2a01:111:f403:e008:: ⚠ US 1
10/29/2024 2a01:111:f403:2009::70e ⚠ US 1
10/29/2024 2a01:111:f403:240a::731 ⚠ US 1
10/29/2024 2a01:111:f403:2415::72c ⚠ US 1
10/29/2024 2a01:111:f403:2417::71d ⚠ US 1
10/29/2024 2a01:111:f403:c000::3 ⚠ US 1
10/22/2024 2a01:111:f403:2009::705 ⚠ US 1
10/22/2024 2a01:111:f403:200a::703 ⚠ US 1
10/22/2024 2a01:111:f403:200a::70b ⚠ US 1
10/22/2024 2a01:111:f403:200a::721 ⚠ US 1
10/22/2024 2a01:111:f403:200a::722 ⚠ US 1
10/22/2024 2a01:111:f403:2408::70c ⚠ US 1
10/22/2024 2a01:111:f403:2409::730 ⚠ US 1
10/22/2024 2a01:111:f403:2412::70c ⚠ US 1
10/22/2024 2a01:111:f403:2412::727 ⚠ US 1
10/22/2024 2a01:111:f403:2412::72a ⚠ US 1
10/22/2024 2a01:111:f403:2415::704 ⚠ US 1
10/22/2024 2a01:111:f403:2415::71d ⚠ US 1
10/22/2024 2a01:111:f403:2612::615 ⚠ NL 1
10/22/2024 2a01:111:f403:2613::702 ⚠ AT 1
10/22/2024 2a01:111:f403:30::200 ⚠ US 1
10/22/2024 2a01:111:f403:30::206 ⚠ US 1
10/22/2024 2a01:111:f403:31::206 ⚠ US 1
10/22/2024 2a01:111:f403:31::207 ⚠ US 1
10/22/2024 2a01:111:f403:33::203 ⚠ US 1
10/22/2024 2a01:111:f403:37::205 ⚠ US 1
10/22/2024 2a01:111:f403:83b::206 ⚠ US 1
10/22/2024 2a01:111:f403:83c::201 ⚠ US 1
10/22/2024 2a01:111:f403:83c::209 ⚠ US 1
10/22/2024 2a01:111:f403:83d::205 ⚠ US 1
10/22/2024 2a01:111:f403:c000::3 ⚠ US 1
10/22/2024 2a01:111:f403:c105::7 ⚠ US 1
10/22/2024 2a01:111:f403:c110::1 ⚠ US 3
10/22/2024 2a01:111:f403:c111::5 ⚠ US 2
10/22/2024 2a01:111:f403:c112::5 ⚠ US 1
10/22/2024 2a01:111:f403:c112::7 ⚠ US 1
9/27/2024 2a01:111:f400:7ea9::702 US 1
9/27/2024 2a01:111:f403:2009::706 ⚠ US 1
9/27/2024 2a01:111:f403:2009::712 ⚠ US 1
9/27/2024 2a01:111:f403:2009::722 ⚠ US 1
9/27/2024 2a01:111:f403:2009::723 ⚠ US 1
9/27/2024 2a01:111:f403:2009::72f ⚠ US 1
9/27/2024 2a01:111:f403:200a::705 ⚠ US 1
9/27/2024 2a01:111:f403:200a::719 ⚠ US 1
9/27/2024 2a01:111:f403:2405::71a ⚠ US 1
9/27/2024 2a01:111:f403:2407::72d ⚠ US 1
9/27/2024 2a01:111:f403:2409::71b ⚠ US 1
9/27/2024 2a01:111:f403:240a::72b ⚠ US 2
9/27/2024 2a01:111:f403:240a::72e ⚠ US 1
Countries