Network: CSF-NET-CIDR-BLK-JP

This page shows DMARC authentication failures originating from the CSF-NET-CIDR-BLK-JP network. Learn more about this data.

Network Information

WHOIS Owner:: Kyushu Tele Communications Company
Countries:: JP

Unique IPs:: 1

CIDR:: 123.242.208.0 - 123.242.223.255

Analysis

This network has contributed 1 unique IP address across 1 failed authentication event, accounting for 2 messages. Activity from this network was observed on April 21, 2025. The top countries by failure volume are Japan (100%). The most active source IP from this network includes 123.242.209.237 (1 failure). A single IP dominates activity from CSF-NET-CIDR-BLK-JP, suggesting a concentrated or persistent source rather than distributed infrastructure.

Failures Detected from this Network

Showing 1-1 of 1 failures, affecting 2 messages

Show Confoundersⓘ

Date ▼	Source IP	Country	Messages
4/21/2025	123.242.209.237	JP	2

Countries

Japan