Network: OPAVANET

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

Network Information

WHOIS Owner:: CZ-OPAVANET
Countries:: CZ

Unique IPs:: 1

CIDR:: 213.155.224.0/19

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 June 8, 2026. The top countries by failure volume are Czechia (100%). The most active source IP from this network includes 213.155.254.136 (1 failure). A single IP dominates activity from OPAVANET, 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
6/8/2026	213.155.254.136	CZ	2

Countries

Czechia