191.53.128.201
IP Intelligence Briefing: 191.53.128.201
*Generated via IPDebrief tools (Profile, History, Relationships, Neighbors)*
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**Risk Assessment**
- Overall Risk: Moderate (Risk Score: 55)
- Threat Indicators: No detected malware, phishing, or spam sources.
- Network Role: Firewalled / No Services (no open ports or TLS services).
- Geolocation: Brazil (Minas Gerais, Montes Claros), inferred with 52% confidence.
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**Ownership & Infrastructure**
- ASN: 28202 (MASTER S/A, LACNIC registry).
- Subnet: 191.53.128.0/23, part of a mixed-risk /24 subnet (abuse density: 42.86%).
- DNS: Resolves to `191-53-128-201.pso-wr.mastercabo.com.br` (no email auth records).
- Control Plane: DNSSEC valid, 3 DNSBL listings (out of 8 total).
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**Observation History**
- Last 30 Days:
- 18 observations (1 threat-related, 15 geolocation, 2 network).
- No persistent malicious activity detected.
- Subnet abuse density increased slightly (0.4286).
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**Network Relationships**
- Linked Entities:
- Same network (AS28202, 227148).
- DNS associations with `mastercabo.com.br` (no further subdomains).
- Neighbors:
- High-risk neighbors: 1 IP (70-80 risk score).
- Moderate-risk neighbors: 18 IPs (40-55 risk score).
- Low-risk neighbors: 1 IP (30 risk score).
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**Actionable Insights**
1. Monitor Subnet: The /24 subnet contains 21 IPs, with 9 active threats. Prioritize monitoring high-risk neighbors (e.g., 191.53.128.107, 191.53.128.173).
2. DNSBL Check: Investigate DNSBL listings (3 out of 8) for potential abuse.
3. Geolocation Validation: Verify the inferred location in Brazil, as geolocation confidence is moderate.
4. Network Segmentation: Confirm if the IP’s firewalled state is intentional or indicative of low visibility.
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*End of Briefing*
*Generated by IPDebrief for SOC analysis.*
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 | 191-53-128-201.pso-wr.mastercabo.com.br |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 191-53-128-201.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 | |||
| Closed Ports | 22, 25, 80, 443, 3389, 8080, 8443 (0 open / 7 scanned) | ||
| 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 | 33% | 2 | 4 |
| routing | 25% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 24% | 1 | 3 |
| geolocation | 21% | 2 | 2 |
| Overall | 23% | 10 | 14 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-07 23:04:03 UTC |
| Last Seen | 2026-06-24 13:37:00 UTC |
| Profile Built | 2026-06-23 02:40:07 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 25 |
Full dossier details are available via our API.