DMARC Spoof Detection, Bulgaria
Clear Clear FilterThis page shows DMARC authentication failures originating from Bulgaria. Learn more about this data.
Bulgaria accounts for 26 DMARC authentication failures observed by sh4meful over the observation window, sourced from 14 distinct IP addresses across 12 networks. This represents approximately 0.0% of total failure volume observed. Activity from Bulgaria has increased over the last 30 days compared with the prior 30-day period. The most active source is NET-SURF_NET-GPON with 10 failures across 2 IP addresses.
26
14
12
46
Top Networks in Bulgaria
Ten most active networks sourcing DMARC failures from Bulgaria:
| Network | Organization | Failures | Distinct IPs | Top City |
|---|---|---|---|---|
| NET-SURF_NET-GPON | — | 10 | 2 | — |
| BTC-BROADBAND-NET-103 | — | 1 | 1 | Stara Zagora |
| BTC-BROADBAND-NET-7 | — | 1 | 1 | Sofia |
| BTC-BROADBAND-NET-9 | — | 1 | 1 | Stara Zagora |
| Suvorovo-Net | — | 1 | 1 | Suvorovo |
| vecna_host_network | — | 2 | 1 | — |
| TECHOFF_SRV_LIMITED | — | 3 | 1 | — |
| IPXO-NET | — | 2 | 1 | — |
| RIPE-ERX-149-62-0-0 | — | 1 | 1 | Sofia |
| AMEE_TECH | — | 1 | 1 | — |
NET-SURF_NET-GPON and BTC-BROADBAND-NET-103 together account for 39% 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 July 13, 2026 with 1 failures recorded. Activity in the most recent 30-day window increased sharply compared with the prior period (1 vs 0 failures).
Regional Context
Compared with peer geographies in Eastern Europe, Bulgaria's failure volume is above the regional median. Countries in this region collectively contributed 0% of failures observed.
Failures
Showing 21-26 of 26 failures, affecting 46 messages| Date ▲ | Source IP | Country | City | Network | Messages |
|---|---|---|---|---|---|
| 6/23/2025 | BG Bulgaria | Sofia | 1 | ||
| 2/11/2026 | BG Bulgaria | Stara Zagora | 4 | ||
| 2/12/2026 | BG Bulgaria | Sofia | 4 | ||
| 2/12/2026 | BG Bulgaria | 1 | |||
| 4/6/2026 | BG Bulgaria | Sevlievo | N/A | 4 | |
| 7/18/2026 | BG Bulgaria | 1 |
What This Means
Country-level patterns don't imply that mail from Bulgaria 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.