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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:
1,071
CIDR:
2a01:111:f400::/40

Analysis

This network has contributed 1,071 unique IP addresses across 6,575 failed authentication events, accounting for 13,621 messages. Activity spans from March 12, 2024 to May 16, 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:c112::5 (360 failures), 2a01:111:f403:c110::1 (352 failures), 2a01:111:f403:c001::2 (348 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 1-50 of 6,575 failures, affecting 13,621 messages
Date ▲ Source IP Country Messages
3/12/2024 2a01:111:f400:7e88::206 US 1
3/12/2024 2a01:111:f400:7e88::718 US 1
3/12/2024 2a01:111:f400:7ea9::202 US 1
3/12/2024 2a01:111:f400:7ea9::206 US 1
3/12/2024 2a01:111:f403:200a::700 ⚠ US 1
3/12/2024 2a01:111:f403:240a::701 ⚠ US 1
3/12/2024 2a01:111:f403:2415::701 ⚠ US 1
3/12/2024 2a01:111:f403:2416::700 ⚠ US 1
3/12/2024 2a01:111:f403:2416::701 ⚠ US 1
3/12/2024 2a01:111:f403:31::200 ⚠ US 2
3/12/2024 2a01:111:f403:35::200 ⚠ US 2
3/12/2024 2a01:111:f403:35::201 ⚠ US 1
3/12/2024 2a01:111:f403:36::201 ⚠ US 1
3/12/2024 2a01:111:f403:37::201 ⚠ US 1
3/12/2024 2a01:111:f403:38::200 ⚠ US 1
3/12/2024 2a01:111:f403:38::201 ⚠ US 1
3/12/2024 2a01:111:f403:83b::200 ⚠ US 2
3/12/2024 2a01:111:f403:83d::200 ⚠ US 1
3/12/2024 2a01:111:f403:83e::200 ⚠ US 2
3/12/2024 2a01:111:f403:e002:: ⚠ US 1
4/16/2024 2a01:111:f403:2009::700 ⚠ US 1
4/16/2024 2a01:111:f403:200a::700 ⚠ US 1
4/16/2024 2a01:111:f403:200a::701 ⚠ US 2
4/16/2024 2a01:111:f403:2409::700 ⚠ US 1
4/16/2024 2a01:111:f403:240a::700 ⚠ US 1
4/16/2024 2a01:111:f403:2412::700 ⚠ US 1
4/16/2024 2a01:111:f403:2417::701 ⚠ US 2
4/16/2024 2a01:111:f403:2418::700 ⚠ US 1
4/16/2024 2a01:111:f403:2418::701 ⚠ US 2
4/16/2024 2a01:111:f403:33::201 ⚠ US 1
5/7/2024 2a01:111:f403:5a::200 ⚠ JP 1
5/7/2024 2a01:111:f403:c400::3 ⚠ HK 1
5/9/2024 2a01:111:f400:7ea9::706 US 1
5/9/2024 2a01:111:f403:2009::700 ⚠ US 1
5/9/2024 2a01:111:f403:200a::700 ⚠ US 1
5/9/2024 2a01:111:f403:2407::700 ⚠ US 1
5/9/2024 2a01:111:f403:2408::701 ⚠ US 3
5/9/2024 2a01:111:f403:2412::700 ⚠ US 2
5/9/2024 2a01:111:f403:34::201 ⚠ US 1
5/27/2024 2a01:111:f403:5a::201 ⚠ JP 1
5/27/2024 2a01:111:f403:c400:: ⚠ HK 1
5/30/2024 2a01:111:f400:7e88::723 US 1
5/30/2024 2a01:111:f400:7e88::72a US 1
5/30/2024 2a01:111:f403:2009::700 ⚠ US 1
5/30/2024 2a01:111:f403:2405::701 ⚠ US 1
5/30/2024 2a01:111:f403:2407::701 ⚠ US 1
5/30/2024 2a01:111:f403:2409::700 ⚠ US 2
5/30/2024 2a01:111:f403:2414::702 ⚠ US 1
5/30/2024 2a01:111:f403:2416::700 ⚠ US 2
5/30/2024 2a01:111:f403:2416::701 ⚠ US 1
Countries