191.53.14.4
IP Intelligence Briefing: 191.53.14.4
Date: 2026-05-29
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**1. Core Profile**
- Risk Score: 55 (Moderate Risk)
- Ownership:
- ASN: 28202
- ISP: MASTER S/A (LACNIC)
- Location: Brazil (SP, Lorena)
- Geolocation:
- City: Lorena, State: São Paulo, Country: Brazil
- Coordinates: Latitude -22.74, Longitude -45.13
- Network Role: Firewalled / No Services (no open ports, no TLS/HTTP services detected)
- Threat Indicators:
- No malicious activity, spam, or known attacker associations.
- No DNSBL listings or campaign correlations.
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**2. Observation History**
- Consistent Ownership:
- Assigned to MASTER S/A since at least 2026-05-29.
- No ownership changes detected.
- Geolocation Stability:
- Plausibly located in Brazil (SP, Lorena) across 13 observations.
- Threat Trends:
- No persistent malicious behavior or threat observations.
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**3. Relationships**
- DNS Associations:
- Resolves to `191-53-14-4.lna-wr.soumaster.com.br` (no email auth records).
- Network Links:
- Subnet: `191.53.14.0/24` (part of larger `191.53.0.0/16` block).
- No direct ties to CDN, cloud, or mobile networks.
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**4. Neighborhood Analysis**
- Subnet Abuse Density: 16.7% (low-risk environment).
- Neighbor IPs (191.53.14.0/24):
- High Risk (80): 191.53.14.128
- Moderate Risk (55): 191.53.14.47, 191.53.14.99, 191.53.14.253, 191.53.14.255
- Low Risk (0): 191.53.14.104
- Recommendation: Monitor high-risk neighbors (e.g., 191.53.14.128) for potential lateral movement or shared infrastructure threats.
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**5. Control Plane & Security**
- BGP: Route stability unknown; no RPKI invalidations detected.
- DNSSEC: Validated (no spoofing risks).
- Firewall Actions: No recommended rules due to low risk, but consider blocking high-risk neighbors if they pose a threat.
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SOC Actionable Insights:
- Monitor the `191.53.14.0/24` subnet for unusual activity, especially around high-risk neighbors.
- Verify DNS records for `soumaster.com.br` to ensure no spoofing or misconfiguration.
- No immediate mitigation required for this IP, but maintain visibility due to mixed-risk subnet context.
Product: IPDebrief | Copyright: 2026 Jason Alberino. All rights reserved.
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 | 191-53-14-4.lna-wr.soumaster.com.br |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 191-53-14-4.lna-wr.soumaster.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 | 13% | 1 | 1 |
| routing | 25% | 1 | 1 |
| services | 13% | 1 | 1 |
| ownership | 19% | 2 | 2 |
| reputation | 13% | 1 | 1 |
| geolocation | 13% | 1 | 1 |
| Overall | 16% | 7 | 7 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-12 21:54:40 UTC |
| Last Seen | 2026-06-26 18:10:58 UTC |
| Profile Built | 2026-06-06 15:27:23 UTC |
| Data Freshness | Live |
| Signal Types | 17 |
| Total Observations | 18 |
Full dossier details are available via our API.