Network: BLUECLOUD

This page shows DMARC authentication failures originating from the BLUECLOUD network. Learn more about this data.

Network Information

WHOIS Owner:: Microsoft (China) Co, Ltd.
Countries:: CN

Unique IPs:: 19

CIDR:: 139.219.0.0/16

Analysis

This network has contributed 19 unique IP addresses across 19 failed authentication events, accounting for 19 messages. Activity from this network spans from September 13, 2024 to December 19, 2025. Activity from BLUECLOUD, a cloud hosting provider, has been observed from China.

Failures Detected from this Network

Showing 1-19 of 19 (failures, affecting 19 messages)

Show Confoundersⓘ

Date ▼	Source IP	Country	Messages
12/19/2025	139.219.146.21	CN	1
12/5/2025	139.219.17.18	CN	1
12/18/2024	139.219.146.120	CN	1
12/5/2024	139.219.146.130	CN	1
11/21/2024	139.219.17.115	CN	1
11/12/2024	139.219.146.104	CN	1
11/12/2024	139.219.146.133	CN	1
10/23/2024	139.219.146.137	CN	1
10/23/2024	139.219.146.92	CN	1
9/27/2024	139.219.146.109	CN	1
9/27/2024	139.219.146.125	CN	1
9/27/2024	139.219.17.134	CN	1
9/18/2024	139.219.146.110	CN	1
9/18/2024	139.219.146.123	CN	1
9/18/2024	139.219.146.126	CN	1
9/18/2024	139.219.146.93	CN	1
9/13/2024	139.219.146.129	CN	1
9/13/2024	139.219.146.138	CN	1
9/13/2024	139.219.146.96	CN	1

Countries

China