170.83.172.135
🏢 Ownership & Registration
| Organization | SEM FRONTEIRAS TELECOMUNICACOES LTDA |
| ASN | AS266475 |
| Network Name | 300111 |
| CIDR Block | 170.83.172.0/22 |
| RIR | ARIN |
| Country | BR |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | semfronteiras.net.br |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | semfronteiras.net.br |
🔐 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 | |||
| 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 | AS266475 |
| Network Prefix | 170.83.172.0/24 |
| 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 | 35% | 2 | 2 |
| ownership | 25% | 1 | 1 |
| reputation | 0% | 0 | 0 |
| geolocation | 25% | 1 | 1 |
| Overall | 22% | 6 | 6 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-11 02:17:57 UTC |
| Last Seen | 2026-09-02 19:05:09 UTC |
| Profile Built | 2026-09-02 19:08:12 UTC |
| Data Freshness | Live |
| Signal Types | 20 |
| Total Observations | 24 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 170.83.172.135
Who owns the IP address 170.83.172.135?
170.83.172.135 is registered to SEM FRONTEIRAS TELECOMUNICACOES LTDA. The address falls within the 170.83.172.0/22 network block. Registration is held at ARIN.
Where is 170.83.172.135 located?
Geolocation data places 170.83.172.135 in Rio Branco, Acre, Brazil. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 170.83.172.135 malicious or safe?
170.83.172.135 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.
What is the hostname for 170.83.172.135?
The reverse DNS (PTR) record for 170.83.172.135 is semfronteiras.net.br. This hostname is not forward-confirmed, so it should be treated as a weak signal.
Is 170.83.172.135 a VPN, proxy, or data center address?
170.83.172.135 is classified as a residential network based on network ownership and behavioural analysis.