37.65.43.158
🏢 Ownership & Registration
| Organization | SFR Legal Contact |
| ASN | AS15557 |
| Network Name | SFR-INFRA |
| CIDR Block | 37.65.40.0/21 |
| RIR | RIPE |
| Country | FR |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | 158.43.65.37.rev.sfr.net |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | 158.43.65.37.rev.sfr.net |
🔐 DNS Hygiene
| Hygiene Score | 60% (Good) |
| SPF | Present |
| DMARC | Not configured |
| FCrDNS | Verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Mobile |
| 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 | — |
🛡️ Public Network Snapshot
| Origin ASN | AS15557 |
| Network Prefix | 37.64.0.0/13 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 0% | 0 | 0 |
| routing | 0% | 0 | 0 |
| services | 0% | 0 | 0 |
| ownership | 25% | 1 | 2 |
| reputation | 0% | 0 | 0 |
| geolocation | 25% | 1 | 1 |
| Overall | 8% | 2 | 3 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-08 19:11:44 UTC |
| Last Seen | 2026-08-27 03:22:46 UTC |
| Profile Built | 2026-08-29 06:16:00 UTC |
| Data Freshness | Live |
| Signal Types | 19 |
| Total Observations | 21 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 37.65.43.158
Who owns the IP address 37.65.43.158?
37.65.43.158 is registered to SFR Legal Contact. The address falls within the 37.65.40.0/21 network block. Registration is held at RIPE.
Where is 37.65.43.158 located?
Geolocation data places 37.65.43.158 in Lyon, Rhône-Alpes, France. The local time zone is Europe/Paris. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 37.65.43.158 malicious or safe?
37.65.43.158 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.
What is the hostname for 37.65.43.158?
The reverse DNS (PTR) record for 37.65.43.158 is 158.43.65.37.rev.sfr.net. This hostname is forward-confirmed, meaning it resolves back to the same address.
Is 37.65.43.158 a VPN, proxy, or data center address?
37.65.43.158 is classified as a mobile network based on network ownership and behavioural analysis.