Network: SFERIA-CZ

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

Network Information

WHOIS Owner:: SferiaNET IPv4 network
Countries:: CZ

Unique IPs:: 1

CIDR:: 185.243.124.0/22

Analysis

This network has contributed 1 unique IP address across 1 failed authentication event, accounting for 4 messages. Activity from this network was observed on August 4, 2026. The top countries by failure volume are Czechia (100%). The most active source IP from this network includes 185.243.127.92 (1 failure). A single IP dominates activity from SFERIA-CZ, suggesting a concentrated or persistent source rather than distributed infrastructure.

Failures Detected from this Network

Showing 1-1 of 1 failures, affecting 4 messages

Show Confoundersⓘ

Date ▼	Source IP	Country	Messages
8/4/2026	185.243.127.92	CZ	4

Countries

Czechia