165.73.137.21
🏢 Ownership & Registration
| Organization | Nico van der Westhuizen |
| ASN | AS328257 |
| Network Name | 165.73.137.0 - 165.73.137.255 |
| CIDR Block | 165.73.137.0/24 |
| RIR | ARIN |
| Country | ZA |
| 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 | Unknown |
| Service Purpose | Web Server |
| Network Tier | Unknown — Insufficient routing data to classify |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 80 | http | tcp | — |
| 443 | https | tcp | — |
| 22 | ssh | tcp | Banner detected |
| Closed Ports | 25, 3389, 8080, 8443 (3 open / 7 scanned) | ||
| Server | Web server detected |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | UBNT-78:8A:20:4E:C3:1E |
| Valid From | 2019-01-01T00:00:00+00:00 |
| Valid Until | 2038-01-01T00:00:00+00:00 |
🛡️ Public Network Snapshot
| Origin ASN | AS328257 |
| Network Prefix | 165.73.136.0/22 |
| Route mapping | Found |
| HSTS | Not detected |
| CSP | Not detected |
| HTTP/2 | Not detected |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 27% | 2 | 3 |
| routing | 13% | 1 | 1 |
| services | 27% | 2 | 3 |
| ownership | 19% | 2 | 2 |
| reputation | 13% | 1 | 2 |
| geolocation | 27% | 2 | 3 |
| Overall | 21% | 10 | 14 |
| Data Coherence | Mixed Signals (68%) — 2 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
⚠ TLS certificate claims US but primary geo says ZA
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-15 04:05:42 UTC |
| Last Seen | 2026-09-02 15:35:01 UTC |
| Profile Built | 2026-09-02 15:38:20 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 26 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 165.73.137.21
Who owns the IP address 165.73.137.21?
165.73.137.21 is registered to Nico van der Westhuizen. The address falls within the 165.73.137.0/24 network block. Registration is held at ARIN.
Where is 165.73.137.21 located?
Geolocation data places 165.73.137.21 in Kleinmond, WC, South Africa. The local time zone is Africa/Johannesburg. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 165.73.137.21 malicious or safe?
165.73.137.21 currently carries a moderate risk assessment, meaning some indicators warrant caution, but the evidence is mixed. This assessment is generated from continuously collected signals and can change over time.
What ports are open on 165.73.137.21?
Responsive ports observed on 165.73.137.21 include 80, 443, 22. Port visibility reflects the most recent scan and may change as the host's configuration or firewall rules change.