Network: SAKURA-NET

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

Network Information

WHOIS Owner:: SAKURA Internet Inc.
Countries:: JP

Unique IPs:: 3

CIDRs:: 153.120.93.0 - 153.120.93.255, 153.125.138.0 - 153.125.138.255, (more)

Analysis

This network has contributed 3 unique IP addresses across 9 failed authentication events, accounting for 12 messages. Activity spans from May 26, 2026 to July 9, 2026, with peak volume in June 2026 (6 events). The top countries by failure volume are Japan (100%). The most active source IPs from this network include 153.125.138.166 (10 failures), 153.120.93.9 (1 failure), 49.212.142.209 (1 failure). A single IP dominates activity from SAKURA-NET, suggesting a concentrated or persistent source rather than distributed infrastructure.

Failures Detected from this Network

Showing 1-9 of 9 failures, affecting 12 messages

Show Confoundersⓘ

Date ▲	Source IP	Country	Messages
5/26/2026	153.125.138.166	JP	2
5/26/2026	49.212.142.209	JP	1
5/29/2026	153.125.138.166	JP	2
6/2/2026	153.125.138.166	JP	1
6/4/2026	153.125.138.166	JP	1
6/16/2026	153.125.138.166	JP	1
6/23/2026	153.125.138.166	JP	2
6/24/2026	153.125.138.166	JP	1
7/9/2026	153.120.93.9	JP	1

Countries

Japan