DMARC Spoof Detection, Uruguay
ClearClear FilterThis page shows DMARC authentication failures originating from Uruguay. Learn more about this data.
Uruguay accounts for 8 DMARC authentication failures observed by sh4meful over the observation window, sourced from 8 distinct IP addresses across 2 networks. This represents approximately 0.1% of total failure volume observed. Activity from Uruguay has increased over the last 30 days compared with the prior 30-day period. The most active source is Administracion Nacional de Telecomunicaciones with 7 failures across 7 IP addresses.
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Top Networks in Uruguay
Ten most active networks sourcing DMARC failures from Uruguay:
| Network | Organization | Failures | Distinct IPs | Top City |
|---|---|---|---|---|
| Administracion Nacional de Telecomunicaciones | — | 7 | 7 | Montevideo |
| ANCEL | — | 1 | 1 | Montevideo |
Administracion Nacional de Telecomunicaciones and ANCEL together account for 100% of failure volume from this country. Concentration in a small number of networks suggests targeted infrastructure rather than diffuse compromise.
Failure Activity Over Time
Peak activity was observed in the week of August 31, 2026 with 4 failures recorded. Activity in the most recent 30-day window increased sharply compared with the prior period (4 vs 0 failures).
Regional Context
Compared with peer geographies in South America, Uruguay's failure volume is below the regional median. Countries in this region collectively contributed 7% of failures observed.
Failures
Showing 1-8 of 8 failures, affecting 23 messages| Date ▼ | Source IP | Country | City | Network | Messages |
|---|---|---|---|---|---|
| 9/1/2026 | UY Uruguay | Montevideo | 4 | ||
| 7/2/2025 | UY Uruguay | Maldonado | 2 | ||
| 6/30/2025 | UY Uruguay | Montevideo | 3 | ||
| 6/23/2025 | UY Uruguay | Montevideo | 1 | ||
| 6/23/2025 | UY Uruguay | Montevideo | 1 | ||
| 4/19/2025 | UY Uruguay | Montevideo | 4 | ||
| 2/13/2025 | UY Uruguay | Montevideo | 4 | ||
| 2/7/2025 | UY Uruguay | Montevideo | 4 |
What This Means
Country-level patterns don't imply that mail from Uruguay 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.