187.120.105.10
IP Intelligence Briefing: 187.120.105.10/32
*Generated via IPDebrief tools: Profile, History, Relationships, Neighbors*
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**Risk Assessment**
- Overall Risk Score: Moderate (55/100)
- Threat Indicators: No active malware, phishing, or known attacker associations.
- Subnet Abuse Density: 18.2% (1 high-risk, 9 medium-risk siblings in 187.120.105.0/24).
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**Geolocation & Ownership**
- Country: Brazil (BR)
- Region: Minas Gerais (MG)
- City: Itajuba
- ASN: 28202 (MASTER S/A, LACNIC registry)
- Network: 187.120.64.0/18 (assigned to MASTER S/A).
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**Network & Service Role**
- Firewalled/No Services: No open ports, TLS, or HTTP services detected.
- DNS:
- PTR hostname: `187-120-105-10.ija-wr.mastercabo.com.br`
- No email authentication (SPF/DKIM) records.
- Control Plane:
- BGP prefix: `187.120.64.0/18` (AS28202, MASTER S/A).
- DNSSEC valid; no CAA records.
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**Observation History (30 Days)**
- Stable ownership (no changes).
- 15 observations:
- 1 low-confidence signal (0.30) from May 30, 2026.
- No persistent malicious activity or threat persistence.
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**Relationships**
- DNS Associations: Linked to `mastercabo.com.br` (same PTR hostname).
- Network: Subnet `187.120.105.0/24` (12 siblings, 1 threat sibling).
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**Neighbor Risk Analysis**
- High-Risk Neighbors:
- 187.120.105.3 (80/100), 187.120.105.43 (80/100).
- Medium-Risk Neighbors: 9 IPs (55–70/100).
- Abuse Density: 18.2% (mostly clean, but 1 threat sibling).
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**Actionable Insights**
1. Monitor Subnet: High-risk neighbors (187.120.105.3/43) may indicate broader network compromise.
2. Verify DNS: Investigate `mastercabo.com.br` for potential spoofing or misconfigurations.
3. Check BGP: Validate AS28202 routes for anomalies (no RPKI violations reported).
4. Subnet Segmentation: Consider isolating 187.120.105.0/24 due to 18.2% abuse density.
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*End of Briefing*
*Generated by IPDebrief | Copyright © 2026 Jason Alberino*
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | MASTER S/A |
| ASN | AS28202 |
| Network Name | 139887 |
| CIDR Block | 187.120.64.0/18 |
| RIR | LACNIC |
| Country | BR |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | 187-120-105-10.ija-wr.mastercabo.com.br |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 187-120-105-10.ija-wr.mastercabo.com.br |
🔐 DNS Hygiene
| Hygiene Score | 20% (Poor) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Firewalled / No Services |
| Network Tier | Unknown — Insufficient routing data to classify |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 35% | 2 | 3 |
| routing | 25% | 1 | 1 |
| services | 13% | 1 | 1 |
| ownership | 19% | 2 | 2 |
| reputation | 28% | 1 | 3 |
| geolocation | 27% | 2 | 2 |
| Overall | 24% | 9 | 12 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-15 02:50:35 UTC |
| Last Seen | 2026-06-07 10:55:53 UTC |
| Profile Built | 2026-06-07 11:15:58 UTC |
| Data Freshness | Live |
| Signal Types | 19 |
| Total Observations | 28 |
Full dossier details are available via our API.