DMARC Spoof Detection, Argentina
Clear Clear FilterThis page shows DMARC authentication failures originating from Argentina. Learn more about this data.
Argentina accounts for 63 DMARC authentication failures observed by sh4meful over the observation window, sourced from 54 distinct IP addresses across 23 networks. This represents approximately 0.2% of total failure volume observed. Activity from Argentina has declined over the last 30 days compared with the prior 30-day period. The most active source is Telecom Argentina S.A. with 10 failures across 10 IP addresses.
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Top Networks in Argentina
Ten most active networks sourcing DMARC failures from Argentina:
| Network | Organization | Failures | Distinct IPs | Top City |
|---|---|---|---|---|
| Telecom Argentina S.A. | — | 10 | 10 | Buenos Aires |
| Telefonica de Argentina | — | 11 | 11 | San Miguel |
| Telecentro S.A. - Clientes Residenciales | — | 6 | 6 | Buenos Aires |
| Apolo -Gold-Telecom-Per | — | 3 | 3 | Gualeguaychú |
| TELESISTEMA S.R.L. | — | 7 | 1 | San Salvador de Jujuy |
| CPS | — | 4 | 3 | — |
| Telecom Personal Bs As | — | 2 | 2 | Santa Fe |
| Coop Telefonica Villa Gesell Ltda | — | 2 | 2 | Libres del Sur |
| ATLANTICA-CGNT-NET-1 | — | 1 | 1 | Santa Teresita |
| NETPATAGONIA SAS | — | 2 | 2 | General Roca |
Telecom Argentina S.A. and Telefonica de Argentina together account for 42% 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 August 31, 2026 with 10 failures recorded. Activity in the most recent 30-day window declined sharply compared with the prior period (10 vs 23 failures).
Regional Context
Compared with peer geographies in South America, Argentina's failure volume is above the regional median. Countries in this region collectively contributed 1% of failures observed.
Failures
Showing 21-30 of 63 failures, affecting 170 messages| Date ▼ | Source IP | Country | City | Network | Messages |
|---|---|---|---|---|---|
| 3/30/2026 | AR Argentina | San Salvador de Jujuy | 2 | ||
| 3/30/2026 | AR Argentina | San Salvador de Jujuy | 1 | ||
| 3/24/2026 | AR Argentina | San Salvador de Jujuy | 1 | ||
| 3/20/2026 | AR Argentina | San Salvador de Jujuy | 1 | ||
| 3/19/2026 | AR Argentina | San Salvador de Jujuy | 1 | ||
| 3/18/2026 | AR Argentina | San Salvador de Jujuy | 1 | ||
| 1/9/2026 | AR Argentina | Pilar | 1 | ||
| 12/10/2025 | AR Argentina | Palmira | 4 | ||
| 7/21/2025 | AR Argentina | San Miguel | 1 | ||
| 7/7/2025 | AR Argentina | Buenos Aires | 1 |
What This Means
Country-level patterns don't imply that mail from Argentina 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.