138.19.140.23
🏢 Ownership & Registration
| Organization | HKBN Hostmaster |
| ASN | AS9269 |
| Network Name | HKBN-HK |
| CIDR Block | 138.19.128.0/17 |
| RIR | ARIN |
| Country | HK |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | 138019140023.ctinets.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | 138019140023.ctinets.com |
🔐 DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Single-Service Host |
| Network Tier | Tier 3 — Basic operator with some routing infrastructure |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 22 | ssh | tcp | Banner detected |
| Closed Ports | 25, 80, 443, 3389, 8080, 8443 (1 open / 7 scanned) | ||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🛡️ Public Network Snapshot
| Origin ASN | AS9269 |
| Network Prefix | 138.19.128.0/18 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 25% | 2 | 4 |
| routing | 8% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 36% | 2 | 7 |
| reputation | 23% | 1 | 4 |
| geolocation | 31% | 2 | 5 |
| Overall | 22% | 10 | 23 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-19 05:58:15 UTC |
| Last Seen | 2026-09-05 19:49:44 UTC |
| Profile Built | 2026-09-05 19:55:02 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 37 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 138.19.140.23
Who owns the IP address 138.19.140.23?
138.19.140.23 is registered to HKBN Hostmaster. The address falls within the 138.19.128.0/17 network block. Registration is held at ARIN.
Where is 138.19.140.23 located?
Geolocation data places 138.19.140.23 in Hong Kong, HK, Hong Kong. The local time zone is Asia/Hong_Kong. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 138.19.140.23 malicious or safe?
138.19.140.23 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 138.19.140.23?
The reverse DNS (PTR) record for 138.19.140.23 is 138019140023.ctinets.com. This hostname is forward-confirmed, meaning it resolves back to the same address.
What ports are open on 138.19.140.23?
Responsive ports observed on 138.19.140.23 include 22. Port visibility reflects the most recent scan and may change as the host's configuration or firewall rules change.