Network: MICROSOFT-IPV6-BLK

This page shows DMARC authentication failures originating from the MICROSOFT-IPV6-BLK network. Learn more about this data.

Network Information

Owner:: Microsoft
Org ID:: MSFT
Address:: One Microsoft Way, Redmond, WA 98052
Countries:: US

Unique IPs:: 52

CIDRs:: 2001:4898::/31, 2001:489A::/32, 2001:489A::/32, 2001:4898::/31

Analysis

This network has contributed 52 unique IP addresses across 71 failed authentication events, accounting for 72 messages. Activity from this network spans from September 12, 2024 to March 13, 2026. Activity from MICROSOFT-IPV6-BLK (Microsoft) has been observed from United States.

Failures Detected from this Network

Showing 51-71 of 71 (failures, affecting 72 messages)

Show Confoundersⓘ

Date ▼	Source IP	Country	Messages
6/4/2025	2001:489a:2202:d::62b	US	1
5/16/2025	2001:489a:2202:d::60d	US	1
5/13/2025	2001:489a:2202:c::62d	US	1
5/2/2025	2001:489a:2202:d::605	US	1
5/2/2025	2001:489a:2202:d::61f	US	1
5/1/2025	2001:489a:2202:d::620	US	1
2/26/2025	2001:489a:2202:4::206	US	1
2/26/2025	2001:489a:2202:d::61b	US	1
2/14/2025	2001:489a:2202:4::207	US	1
2/14/2025	2001:489a:2202:c::60c	US	1
12/19/2024	2001:489a:2202:4::204	US	1
12/19/2024	2001:489a:2202:5::205	US	1
12/18/2024	2001:489a:2202:5::208	US	1
12/18/2024	2001:489a:2202:c::620	US	1
12/17/2024	2001:489a:2202:d::61a	US	1
12/4/2024	2001:489a:2202:d::60e	US	1
11/19/2024	2001:489a:2202:d::60d	US	1
11/11/2024	2001:489a:2202:c::62d	US	1
10/22/2024	2001:489a:2202:d::613	US	1
9/26/2024	2001:489a:2202:d::62f	US	1
9/12/2024	2001:489a:2202:c::625	US	1

Countries

United States