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:: 2

CIDRs:: 153.125.138.0 - 153.125.138.255, 49.212.142.0 - 49.212.142.255

Analysis

This network has contributed 2 unique IP addresses across 3 failed authentication events, accounting for 5 messages. Activity spans from May 26, 2026 to May 29, 2026, with peak volume in May 2026 (5 events). The top countries by failure volume are Japan (100%). The most active source IPs from this network include 153.125.138.166 (4 failures), 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 1-3 of 3 failures, affecting 5 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

Countries

Japan