DMARC Spoof Detection, South Africa
Clear Clear FilterThis page shows DMARC authentication failures originating from South Africa. Learn more about this data.
South Africa accounts for 41 DMARC authentication failures observed by sh4meful over the observation window, sourced from 26 distinct IP addresses across 11 networks. This represents approximately 0.1% of total failure volume observed. Activity from South Africa has declined over the last 30 days compared with the prior 30-day period. The most active source is Telkom_Internet_Broadband_105_184 with 3 failures across 3 IP addresses.
41
26
11
76
Top Networks in South Africa
Ten most active networks sourcing DMARC failures from South Africa:
| Network | Organization | Failures | Distinct IPs | Top City |
|---|---|---|---|---|
| Telkom_Internet_Broadband_105_184 | — | 3 | 3 | Sasolburg |
| UK-MICROSOFT-20060601 | Microsoft | 17 | 4 | Cape Town |
| IPNET-SAIX-LAN | — | 1 | 1 | Cape Town |
| SoftphoneVIP | — | 1 | 1 | Isando |
| ECN_DSL_DYNAMIC_POOL1 | — | 1 | 1 | Durban |
| DAVO-LOOP | — | 1 | 1 | Bloemfontein |
| MTNSA-41-117-128-0-17 | — | 1 | 1 | Johannesburg |
| gridhost | — | 2 | 1 | — |
| IPNET-SMTP-1 | — | 2 | 2 | — |
| MTNSA-41-119-128-0-17 | — | 1 | 1 | Durban |
Telkom_Internet_Broadband_105_184 and Microsoft together account for 49% of failure volume from this country. Distribution across many networks is consistent with commodity spoofing infrastructure operating from this geography.
Failure Activity Over Time
Peak activity was observed in the week of June 15, 2026 with 8 failures recorded. Activity in the most recent 30-day window declined compared with the prior period (5 vs 8 failures).
Failures
Showing 21-30 of 41 failures, affecting 76 messages| Date ▼ | Source IP | Country | City | Network | Messages |
|---|---|---|---|---|---|
| 1/6/2026 | ZA South Africa | Cape Town | 1 | ||
| 12/10/2025 | ZA South Africa | Durban | 4 | ||
| 12/9/2025 | ZA South Africa | Cape Town | 1 | ||
| 12/4/2025 | ZA South Africa | Cape Town | 1 | ||
| 12/2/2025 | ZA South Africa | Johannesburg | 1 | ||
| 11/18/2025 | ZA South Africa | Cape Town | 1 | ||
| 10/15/2025 | ZA South Africa | Port Elizabeth | 8 | ||
| 10/15/2025 | ZA South Africa | Sasolburg | 8 | ||
| 10/7/2025 | ZA South Africa | Johannesburg | 1 | ||
| 9/30/2025 | ZA South Africa | Cape Town | 1 |
What This Means
Country-level patterns don't imply that mail from South Africa is inherently malicious. Many failures reflect misconfigured legitimate senders, forwarded messages that break authentication, or automated infrastructure operating without authorization. Domain owners investigating a specific failure should look at the source IP and network details rather than the country alone. Our DMARC guide explains how to interpret these signals in your own reports.