DMARC Spoof Detection, Croatia
ClearClear FilterThis page shows DMARC authentication failures originating from Croatia. Learn more about this data.
Croatia accounts for 8 DMARC authentication failures observed by sh4meful over the observation window, sourced from 6 distinct IP addresses across 4 networks. This represents approximately 0.1% of total failure volume observed. Activity from Croatia has held roughly steady over the last 30 days. The most active source is T-HT with 2 failures across 2 IP addresses.
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6
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Top Networks in Croatia
Ten most active networks sourcing DMARC failures from Croatia:
| Network | Organization | Failures | Distinct IPs | Top City |
|---|---|---|---|---|
| T-HT | — | 2 | 2 | Mali Lošinj |
| HR-TELEMACH-20050415 | — | 1 | 1 | Zagreb |
| MTNET | — | 3 | 1 | Varaždin |
| XNET-CABLE | — | 1 | 1 | Zagreb |
T-HT and HR-TELEMACH-20050415 together account for 64% of failure volume from this country. Concentration in a small number of networks suggests targeted infrastructure rather than diffuse compromise.
Failure Activity Over Time
Regional Context
Compared with peer geographies in Southern Europe, Croatia's failure volume is below the regional median. Countries in this region collectively contributed 2% of failures observed.
Failures
Showing 1-8 of 8 failures, affecting 14 messages| Date ▼ | Source IP | Country | City | Network | Messages |
|---|---|---|---|---|---|
| 4/7/2026 | HR Croatia | Varaždin | 1 | ||
| 4/7/2026 | HR Croatia | Varaždin | 1 | ||
| 4/7/2026 | HR Croatia | Zagreb | 4 | ||
| 4/7/2026 | HR Croatia | Varaždin | 1 | ||
| 3/29/2026 | HR Croatia | Mali Lošinj | 1 | ||
| 7/21/2025 | HR Croatia | Zagreb | N/A | 1 | |
| 7/6/2025 | HR Croatia | Zagreb | 1 | ||
| 7/1/2025 | HR Croatia | Zagreb | 4 |
What This Means
Country-level patterns don't imply that mail from Croatia 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.