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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:
1,070
CIDR:
2a01:111:f400::/40

Analysis

This network has contributed 1,070 unique IP addresses across 6,475 failed authentication events, accounting for 13,416 messages. Activity spans from March 12, 2024 to April 10, 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 (347 failures), 2a01:111:f403:c110::1 (346 failures), 2a01:111:f403:c001::2 (343 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 6,201-6,250 of 6,475 failures, affecting 13,416 messages
Date ▼ Source IP Country Messages
9/12/2024 2a01:111:f403:200a::713 ⚠ US 1
9/12/2024 2a01:111:f403:200a::71c ⚠ US 1
9/12/2024 2a01:111:f403:2405::71c ⚠ US 1
9/12/2024 2a01:111:f403:2407::702 ⚠ US 1
9/12/2024 2a01:111:f403:2407::705 ⚠ US 1
9/12/2024 2a01:111:f403:2408::708 ⚠ US 1
9/12/2024 2a01:111:f403:2408::717 ⚠ US 1
9/12/2024 2a01:111:f403:2408::724 ⚠ US 1
9/12/2024 2a01:111:f403:2408::726 ⚠ US 1
9/12/2024 2a01:111:f403:2409::724 ⚠ US 1
9/12/2024 2a01:111:f403:2409::72c ⚠ US 1
9/12/2024 2a01:111:f403:240a::708 ⚠ US 1
9/12/2024 2a01:111:f403:240a::72d ⚠ US 1
9/12/2024 2a01:111:f403:2414::705 ⚠ US 1
9/12/2024 2a01:111:f403:2415::70f ⚠ US 2
9/12/2024 2a01:111:f403:2415::71e ⚠ US 1
9/12/2024 2a01:111:f403:2416::71b ⚠ US 1
9/12/2024 2a01:111:f403:2417::70d ⚠ US 1
9/12/2024 2a01:111:f403:2417::72d ⚠ US 1
9/12/2024 2a01:111:f403:2418::70e ⚠ US 1
9/12/2024 2a01:111:f403:2418::71c ⚠ US 1
9/12/2024 2a01:111:f403:33::204 ⚠ US 1
9/12/2024 2a01:111:f403:35::206 ⚠ US 1
9/12/2024 2a01:111:f403:38::208 ⚠ US 1
9/12/2024 2a01:111:f403:c000::1 ⚠ US 1
9/12/2024 2a01:111:f403:c001::2 ⚠ US 3
9/12/2024 2a01:111:f403:c10d:: ⚠ US 1
9/12/2024 2a01:111:f403:c110:: ⚠ US 1
9/12/2024 2a01:111:f403:c111::5 ⚠ US 3
9/12/2024 2a01:111:f403:c111::9 ⚠ US 2
9/12/2024 2a01:111:f403:c112:: ⚠ US 2
9/12/2024 2a01:111:f403:c201::3 ⚠ NL 1
9/12/2024 2a01:111:f403:e00b:: ⚠ US 1
9/6/2024 2a01:111:f400:7e88::716 US 2
9/6/2024 2a01:111:f400:7ea9::70f US 1
9/6/2024 2a01:111:f400:7ea9::710 US 1
9/6/2024 2a01:111:f403:2009::728 ⚠ US 1
9/6/2024 2a01:111:f403:200a::700 ⚠ US 1
9/6/2024 2a01:111:f403:200a::701 ⚠ US 1
9/6/2024 2a01:111:f403:200a::715 ⚠ US 1
9/6/2024 2a01:111:f403:200a::724 ⚠ US 1
9/6/2024 2a01:111:f403:200a::726 ⚠ US 1
9/6/2024 2a01:111:f403:200a::72b ⚠ US 2
9/6/2024 2a01:111:f403:2405::718 ⚠ US 1
9/6/2024 2a01:111:f403:2409::70b ⚠ US 1
9/6/2024 2a01:111:f403:240a::704 ⚠ US 1
9/6/2024 2a01:111:f403:240a::71b ⚠ US 1
9/6/2024 2a01:111:f403:2412::72b ⚠ US 2
9/6/2024 2a01:111:f403:2414::714 ⚠ US 1
9/6/2024 2a01:111:f403:2414::71a ⚠ US 1
Countries