131.100.207.231
INTELLIGENCE BRIEFING: 131.100.207.231/32
EXECUTIVE SUMMARY
IP 131.100.207.231 is a low-risk residential endpoint located in Brazil (São Paulo region, Reginópolis). The IP belongs to NETCENTER FIBRA TELECOMUNICACOES LTDA (ASN 273409, network 518356) and presents minimal threat indicators. No active malicious services or open ports were detected.
RISK ASSESSMENT
- Overall Risk Score: 25 (Low Risk)
- Reputation: Low Risk
- Network Classification: Residential Endpoint
- Infrastructure Type: Residential
OWNERSHIP & GEOLOCATION
- Organization: NETCENTER FIBRA TELECOMUNICACOES LTDA
- ASN: 273409
- Network: 131.100.204.0/22
- Location: Brazil, São Paulo region, Reginópolis
- Geolocation Confidence: 0.52 (multi-signal inference)
- Geo Consensus: True
THREAT INDICATORS
- Blacklist Count: 0
- Known Attacker: False
- Tor Exit Node: False
- Spam Source: False
- Abuse Confidence Score: Not applicable
- Known Campaigns: None
- DNSBL Listings: 1 of 8 total lists
NETWORK SERVICES
- Open Ports: None detected
- TLS Certificate: None
- HTTP Service: None
- Active Services: None
- Email Reputation: Not assessed (no hosted domains)
NEIGHBORHOOD ANALYSIS (131.100.207.0/24)
- Subnet Abuse Density: 9.09%
- Classification: Mostly Clean
- Total Sibling IPs: 11
- Active Siblings: 2
- Threat Siblings: 1
- Risk Distribution: 0 high-risk, 3 medium-risk, 6 low-risk
- Notable neighbors include 131.100.207.107 (risk 40), 131.100.207.124 (risk 55), and 131.100.207.193 (risk 40)
OBSERVATION HISTORY
- Total Observations: 11
- Most Recent: 2026-07-24
- Threat Persistence Days: 0
- Is Persistently Malicious: False
- Ownership Changes: 0
- Threat Observation Count: 0
RELATIONSHIPS
- Network Relationships: 3 entries to network 518356
- No hostname, organization, or certificate associations beyond network level
SECURITY RECOMMENDATIONS
- No immediate blocking required. IP classified as residential with low risk profile.
- Monitor for service enumeration (currently no open ports detected).
- Neighborhood contains 1 threat sibling and 3 medium-risk IPs—maintain awareness of subnet activity.
- Standard residential traffic filtering applies; no aggressive blocking recommended.
FINAL ASSESSMENT
The IP exhibits characteristics of a legitimate residential endpoint with no current malicious activity. Risk remains low. Continue standard monitoring protocols.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | NETCENTER FIBRA TELECOMUNICACOES LTDA |
| ASN | AS273409 |
| Network Name | 518356 |
| CIDR Block | 131.100.204.0/22 |
| RIR | ARIN |
| Country | BR |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR Record | No PTR |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
🔐 DNS Hygiene
| Hygiene Score | 20% (Poor) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Residential |
| Service Purpose | Residential Endpoint |
| Network Tier | End-User — Residential ISP endpoint |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🛡️ Public Network Snapshot
| Origin ASN | AS273409 |
| Network Prefix | 131.100.207.0/24 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 35% | 2 | 2 |
| routing | 25% | 1 | 1 |
| services | 25% | 1 | 1 |
| ownership | 25% | 1 | 1 |
| reputation | 25% | 1 | 1 |
| geolocation | 0% | 0 | 0 |
| Overall | 22% | 6 | 6 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-07 00:23:44 UTC |
| Last Seen | 2026-08-26 23:32:28 UTC |
| Profile Built | 2026-08-29 07:03:11 UTC |
| Data Freshness | Live |
| Signal Types | 13 |
| Total Observations | 15 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 131.100.207.231
Who owns the IP address 131.100.207.231?
131.100.207.231 is registered to NETCENTER FIBRA TELECOMUNICACOES LTDA. The address falls within the 131.100.204.0/22 network block. Registration is held at ARIN.
Where is 131.100.207.231 located?
Geolocation data places 131.100.207.231 in Reginópolis, SP, Brazil. The local time zone is America/Sao_Paulo. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 131.100.207.231 malicious or safe?
131.100.207.231 currently carries a low risk assessment, meaning no significant threat indicators have been observed. This assessment is generated from continuously collected signals and can change over time.
Is 131.100.207.231 a VPN, proxy, or data center address?
131.100.207.231 is classified as a residential network based on network ownership and behavioural analysis.