191.240.37.47
IP Intelligence Briefing: 191.240.37.47
Date: 2026-06-07
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**1. Core Profile**
- Risk Score: 55 (Moderate Risk)
- Ownership:
- ASN: 28202 (MASTER S/A, Brazil)
- RIR: LACNIC
- CIDR: 191.240.0.0/17
- Geolocation:
- Country: Brazil (BR)
- Region: Minas Gerais
- City: Unai
- Threat Indicators:
- No known malicious activity, spam, or attacker associations.
- Not listed in DNSBLs or blacklists.
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**2. Network Behavior**
- Services:
- No open ports, TLS certificates, or HTTP services detected.
- Routing:
- BGP prefix: 191.240.36.0/23 (AS28202, MASTER S/A).
- Route stability: Unstable (0 route changes in 30 days).
- DNS:
- PTR hostname: `191-240-37-47.mal-wr.mastercabo.com`.
- SPF record present; no DMARC or CAA records.
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**3. Observation History**
- Temporal Trends:
- No persistent threats; zero threat observations in 30 days.
- Risk score remained stable at "Minimal" (0.13) since 2026-05-29.
- Geolocation Validity:
- Plausibility: Low (geo-validation failure).
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**4. Relationships**
- Linked Entities:
- DNS: `191-240-37-47.mal-wr.mastercabo.com` (same IP).
- Network: Subnet `191.240.37.47/24` (same network).
- Organization: MASTER S/A (ASN 28202).
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**5. Subnet Analysis**
- Neighborhood Risk:
- Subnet abuse density: 21.4% (low).
- High-risk neighbors: 3 IPs (80 risk score).
- Moderate-risk neighbors: 9 IPs (55 risk score).
- Low-risk neighbors: 2 IPs (0 risk score).
- Notable Neighbors:
- `191.240.37.29` (80 risk), `191.240.37.46` (55 risk), `191.240.37.177` (80 risk).
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**6. Recommendations**
- Monitor:
- Track the subnet for emerging threats, particularly high-risk neighbors.
- Validate DNS associations (`mastercabo.com`) for potential spoofing or phishing.
- Action:
- Consider blocking high-risk neighbors (e.g., `191.240.37.29`, `191.240.37.177`) to mitigate lateral movement risks.
- Verify if the hostname `191-240-37-47.mal-wr.mastercabo.com` is linked to any malicious campaigns.
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Note: This IP appears benign but is part of a subnet with mixed risk. Prioritize monitoring high-risk neighbors and DNS ties.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | MASTER S/A |
| ASN | AS28202 |
| Network Name | 213404 |
| CIDR Block | 191.240.0.0/17 |
| RIR | LACNIC |
| Country | BR |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | 191-240-37-47.mal-wr.mastercabo.com |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 191-240-37-47.mal-wr.mastercabo.com |
🔐 DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Present |
| 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 | 19% | 2 | 2 |
| routing | 13% | 1 | 1 |
| services | 13% | 1 | 1 |
| ownership | 19% | 2 | 2 |
| reputation | 13% | 1 | 2 |
| geolocation | 19% | 2 | 2 |
| Overall | 16% | 9 | 10 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Fresh
| First Seen | 2026-05-13 12:49:54 UTC |
| Last Seen | 2026-06-25 07:54:52 UTC |
| Profile Built | 2026-06-24 09:16:04 UTC |
| Data Freshness | Fresh |
| Signal Types | 17 |
| Total Observations | 17 |
Full dossier details are available via our API.