191.53.132.51
IP Intelligence Briefing: 191.53.132.51
*Generated via IPDebrief tools: Profile, History, Relationships, Neighbors*
---
**1. Core Profile**
- Risk Score: 55 (Moderate Risk)
- Ownership:
- ASN: 28202 (MASTER S/A, Brazil)
- CIDR: 191.53.0.0/16
- Geolocation:
- City: Montes Claros, Minas Gerais, Brazil
- Coordinates: Not fully resolved (2500km accuracy radius)
- Threat Indicators:
- No known malicious activity, spam, or attacker associations.
- No DNSBL listings or TLS certificate issues.
- Network Role:
- Firewalled / No Services (openPorts: empty)
- BGP Prefix: 191.53.0.0/16 (AS28202)
- DNSSEC Valid, no CAA records.
---
**2. Observation History**
- Latest Activity:
- Geolocation confirmed (Brazil) via MaxMind.
- Network ownership stability: No recent changes.
- Trends:
- Consistent routing data (AS28202) over 30 days.
- No spikes in scans or threats.
---
**3. Relationships**
- Network Associations:
- Linked to subnet 191.53.0.0/16 (MASTER S/A).
- DNS PTR record: 191-53-132-51.pso-wr.mastercabo.com.br.
- No Known Threat Connections:
- No correlated IPs, campaigns, or malicious certificates.
---
**4. Neighborhood Analysis**
- Subnet: 191.53.132.0/24
- Abuse Density: 16.7% (1 high-risk neighbor, 5 medium-risk).
- Key Neighbors:
- 191.53.132.193: Risk Score 80 (highest in subnet).
- 191.53.132.9, 47, 93, 127, 129: Medium risk (55–40).
---
**5. Recommendations**
- Monitor Subnet: The 191.53.132.0/24 subnet has mixed abuse density. Prioritize monitoring high-risk neighbors (e.g., 191.53.132.193).
- DNS Analysis: Investigate DNS PTR record 191-53-132-51.pso-wr.mastercabo.com.br for potential breaches or spoofing.
- Network Segmentation: Ensure firewalled isolation for this IP, given no active services.
- Threat Hunting: Cross-check with internal threat feeds for anomalies in the 191.53.0.0/16 range.
---
*No immediate action required for 191.53.132.51, but contextualize within subnet risks and DNS associations.*
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | MASTER S/A |
| ASN | AS28202 |
| Network Name | 227148 |
| CIDR Block | 191.53.0.0/16 |
| RIR | LACNIC |
| Country | BR |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | 191-53-132-51.pso-wr.mastercabo.com.br |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 191-53-132-51.pso-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 | 30% | 2 | 4 |
| routing | 19% | 1 | 2 |
| services | 8% | 1 | 1 |
| ownership | 19% | 2 | 2 |
| reputation | 22% | 1 | 3 |
| geolocation | 35% | 2 | 3 |
| Overall | 22% | 9 | 15 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-11 08:58:14 UTC |
| Last Seen | 2026-06-26 08:32:46 UTC |
| Profile Built | 2026-06-26 08:44:46 UTC |
| Data Freshness | Live |
| Signal Types | 18 |
| Total Observations | 23 |
Full dossier details are available via our API.