187.120.106.147
IP Intelligence Briefing: 187.120.106.147
Date: 2026-06-02
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**1. Core Profile**
- Risk Score: Moderate (55/100)
- Ownership: Owned by MASTER S/A (ASN 28202, Brazil).
- Geolocation: Registered to Minas Gerais, Brazil, but geo-plausibility is invalid (RTT anomalies suggest discrepancy).
- Network Role: No services detected (open ports, TLS, HTTP). Firewalled or non-routable.
- Threat Indicators: No malicious activity detected (no blacklists, campaigns, or abuse reports).
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**2. Observation History**
- Recent Activity:
- Network prefix 187.120.104.0/21 linked to MASTER S/A.
- RTT Anomalies: 154ms latency inconsistent with 9,727km distance (minimum possible RTT: 194.5ms).
- DNS Listings: Appears in 3/8 DNSBLs (moderate risk).
- Trend: No persistent threats or ownership changes detected.
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**3. Relationships & Context**
- Network Associations:
- Same network: 139887 (MASTER S/A).
- DNS hostname: 187-120-106-147.ija-wr.mastercabo.com.br.
- Subnet Neighbors (187.120.106.0/24):
- 2 high-risk IPs (e.g., 187.120.106.76, 187.120.106.133).
- 7 medium/low-risk IPs.
- Abuse Density: 20% (moderate risk).
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**4. Recommendations**
- Monitor Subnet: High-risk neighbors (e.g., 187.120.106.76) suggest potential lateral movement risks.
- Verify Geolocation: Investigate RTT anomalies and geo-plausibility issues.
- DNS Analysis: Validate DNS hostname 187-120-106-147.ija-wr.mastercabo.com.br for legitimacy.
- Network Segmentation: Consider isolating this subnet due to mixed risk profiles.
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Conclusion: The IP is part of a moderately risky subnet with no direct threats but warrants monitoring for anomalies or lateral activity.
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 | 187-120-106-147.ija-wr.mastercabo.com.br |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 187-120-106-147.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 | 37% | 2 | 3 |
| routing | 17% | 1 | 1 |
| services | 8% | 1 | 1 |
| ownership | 19% | 2 | 2 |
| reputation | 32% | 1 | 3 |
| geolocation | 32% | 2 | 3 |
| Overall | 24% | 9 | 13 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-07 23:04:02 UTC |
| Last Seen | 2026-06-23 01:38:27 UTC |
| Profile Built | 2026-06-23 01:39:48 UTC |
| Data Freshness | Live |
| Signal Types | 17 |
| Total Observations | 20 |
Full dossier details are available via our API.