Sh4mefulNetwork: OPTUSINTERNET-AU
This page shows DMARC authentication failures originating from the OPTUSINTERNET-AU network. Learn more about this data.
Network Information
- WHOIS Owner:
- ORG-OIPL5-AP
- Countries:
- AU
- Unique IPs:
- 1
- CIDR:
58.105.176.0/20
Analysis
This network has contributed 1 unique IP address across 4 failed authentication events, accounting for 6 messages. Activity spans from December 31, 2025 to January 13, 2026, with peak volume in January 2026 (4 events). The top countries by failure volume are Australia (100%). The most active source IP from this network includes 58.105.183.243 (5 failures). A single IP dominates activity from OPTUSINTERNET-AU, suggesting a concentrated or persistent source rather than distributed infrastructure.
Failures Detected from this Network
Showing 1-4 of 4 failures, affecting 6 messages| Date ▼ | Source IP | Country | Messages |
|---|---|---|---|
| 1/13/2026 | AU | 1 | |
| 1/12/2026 | AU | 2 | |
| 1/8/2026 | AU | 1 | |
| 12/31/2025 | AU | 2 |
Countries