191.53.113.185
IP Intelligence Briefing: 191.53.113.185
Risk Assessment: Moderate (Risk Score: 40)
Ownership: Owned by MASTER S/A (ASN 28202) in Brazil (SP, Taubaté).
Geolocation: Brazil, São Paulo, Taubaté (2500km accuracy radius).
Threat Indicators: No malicious indicators, spam, or known attacker associations.
Network Profile:
- Firewalled/No Services: No open ports or TLS/HTTP services detected.
- DNS: Linked to `191-53-113-185.bet-wr.mastercabo.com.br` (PTR hostname). No email auth (SPF/DKIM).
- Control Plane: DNSSEC valid, 2/8 DNSBL listings (moderate risk). BGP prefix `191.53.113.0/24` with stable routing.
Observation History:
- Minimal risk signals over 30 days. No persistent threats or ownership changes.
Relationships:
- DNS Associations: 5+ hostnames tied to `mastercabo.com.br`.
- Network: Same subnet (`227148`) as 16 siblings, 7 of which show higher risk (55–80).
Neighborhood Analysis:
- Subnet: `191.53.113.0/24` with 16 IPs. Abuse density: 12.5% (2 high-risk, 14 medium-risk IPs).
- Notable Neighbors:
- 191.53.113.28 (Risk: 80), 191.53.113.31 (Risk: 80), 191.53.113.238 (Risk: 55).
Recommendations:
1. Monitor subnet for lateral movement or increased risk.
2. Investigate DNSBL listings and validate DNSSEC configurations.
3. Update firewall rules to block high-risk neighbors (e.g., 191.53.113.28).
4. Ensure no internal services are exposed to this subnet.
Summary: Low immediate threat, but subnet contains mixed-risk IPs. Prioritize monitoring DNS and neighbor activity for potential escalation.
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 | 191-53-113-185.bet-wr.mastercabo.com.br |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 191-53-113-185.bet-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 | 19% | 2 | 2 |
| routing | 25% | 1 | 1 |
| services | 19% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 13% | 1 | 2 |
| geolocation | 19% | 2 | 2 |
| Overall | 19% | 10 | 11 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-13 12:12:31 UTC |
| Last Seen | 2026-06-06 20:43:59 UTC |
| Profile Built | 2026-06-06 20:48:46 UTC |
| Data Freshness | Live |
| Signal Types | 20 |
| Total Observations | 21 |
Full dossier details are available via our API.