DMARC Spoof Detection, Singapore
Clear Clear FilterThis page shows DMARC authentication failures originating from Singapore. Learn more about this data.
Singapore accounts for 11 DMARC authentication failures observed by sh4meful over the observation window, sourced from 9 distinct IP addresses across 8 networks. This represents approximately 0.1% of total failure volume observed. Activity from Singapore has held roughly steady over the last 30 days. The most active source is STARHUBINTERNET with 1 failures across 1 IP address.
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9
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Top Networks in Singapore
Ten most active networks sourcing DMARC failures from Singapore:
| Network | Organization | Failures | Distinct IPs | Top City |
|---|---|---|---|---|
| STARHUBINTERNET | — | 1 | 1 | Singapore |
| SIMBA | — | 2 | 2 | Singapore |
| SPTEL-SG | — | 3 | 1 | Singapore |
| Trunk-Networks-SG | — | 1 | 1 | Singapore |
| CTG92-48-HK | — | 1 | 1 | — |
| UK-MICROSOFT-20060601 | Microsoft | 1 | 1 | Singapore |
| GOOGL-2 | 1 | 1 | Singapore | |
| SCLOUDPTELTD-SG | — | 1 | 1 | — |
STARHUBINTERNET and SIMBA together account for 47% 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 1, 2026 with 1 failures recorded. Activity in the most recent 30-day window held roughly steady compared with the prior period (0 vs 0 failures).
Regional Context
Compared with peer geographies in South-Eastern Asia, Singapore's failure volume is below the regional median. Countries in this region collectively contributed 3% of failures observed.
Failures
Showing 1-10 of 11 failures, affecting 15 messages| Date ▼ | Source IP | Country | City | Network | Messages |
|---|---|---|---|---|---|
| 6/6/2026 | SG Singapore | Singapore | 1 | ||
| 4/19/2026 | SG Singapore | 1 | |||
| 4/3/2026 | SG Singapore | Singapore | 1 | ||
| 4/3/2026 | SG Singapore | Singapore | 2 | ||
| 6/5/2025 | SG Singapore | Singapore | 1 | ||
| 4/6/2025 | SG Singapore | Singapore | 4 | ||
| 11/21/2024 | SG Singapore | 1 | |||
| 5/31/2024 | SG Singapore | Singapore | 1 | ||
| 4/15/2024 | SG Singapore | Singapore | 1 | ||
| 4/9/2024 | SG Singapore | Singapore | 1 |
What This Means
Country-level patterns don't imply that mail from Singapore 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.