138.204.87.158
🏢 Ownership & Registration
| Organization | oliveira santos telecomunicacoes ltda |
| ASN | AS263886 |
| Network Name | 260437 |
| CIDR Block | 138.204.84.0/22 |
| 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 | 0% (None) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Not signed |
| 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 | |||
| Closed Ports | 22, 25, 80, 443, 3389, 8080, 8443 (0 open / 7 scanned) | ||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🛡️ Public Network Snapshot
| Origin ASN | AS263886 |
| Network Prefix | 138.204.86.0/23 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 25% | 1 | 1 |
| routing | 25% | 1 | 1 |
| services | 25% | 1 | 1 |
| ownership | 35% | 2 | 2 |
| reputation | 0% | 0 | 0 |
| geolocation | 25% | 1 | 1 |
| Overall | 22% | 6 | 6 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-10-06 15:21:16 UTC |
| Last Seen | 2026-10-11 11:34:32 UTC |
| Profile Built | 2026-10-06 15:28:19 UTC |
| Data Freshness | Live |
| Signal Types | 12 |
| Total Observations | 12 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 138.204.87.158
Who owns the IP address 138.204.87.158?
138.204.87.158 is registered to oliveira santos telecomunicacoes ltda. The address falls within the 138.204.84.0/22 network block. Registration is held at ARIN.
Where is 138.204.87.158 located?
Geolocation data places 138.204.87.158 in Rio de Janeiro, RJ, 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 138.204.87.158 malicious or safe?
138.204.87.158 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 138.204.87.158 a VPN, proxy, or data center address?
138.204.87.158 is classified as a residential network based on network ownership and behavioural analysis.