158.108.21.39
158.108.21.39 is an IPv4 address announced by AS9411, with approximate network location London, Thailand. Its reverse DNS name is icpc.cs.sci.ku.ac.th. As of November 11, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Registered holder | Kasetsart University |
| ASN | AS9411 |
| Network Name | KASETSART-TH |
| CIDR Block | 158.108.0.0/16 |
| RIR | ARIN |
| Network registration country | TH |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | icpc.cs.sci.ku.ac.th |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | icpc.cs.sci.ku.ac.th |
DNS Posture
Results describe the queried names. SPF, DMARC and CAA are domain policies, not requirements for every IP. DNSSEC here describes reverse DNS; inconclusive validation does not mean unsigned.
Not assessed: 0 conclusive IP DNS checks.
| spf | Not checked |
| dmarc | Not checked |
| fcrDns | Not checked |
| dnssec | Not checked |
| caa | Not checked |
☁️ 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 | — |
| Closed Ports | 22, 25, 3389, 8080, 8443 (2 open / 7 scanned) | ||
| Server | Web server detected |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | icpc.cs.sci.ku.ac.th |
| Valid From | 2026-07-30T03:25:57+00:00 |
| Valid Until | 2026-10-28T03:25:56+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_256_GCM_SHA384 |
| Signature Algorithm | sha384ECDSA |
| Validity Period | 89 days |
🛡️ Public Network Snapshot
| Origin ASN | AS9411 |
| Network Prefix | 158.108.16.0/20 |
| Route mapping | Found |
| HSTS | Enabled |
| CSP | Not detected |
| HTTP/2 | Enabled |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 21% | 2 | 4 |
| routing | 8% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 36% | 2 | 5 |
| reputation | 8% | 1 | 2 |
| geolocation | 17% | 2 | 3 |
| Overall | 17% | 10 | 17 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Stale
| First Seen | 2026-07-21 00:43:31 UTC |
| Last Seen | 2026-10-05 23:45:31 UTC |
| Profile Built | 2026-11-11 20:50:43 UTC |
| Data Freshness | Stale |
| Signal Types | 24 |
| Total Observations | 27 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 158.108.21.39
Who owns the IP address 158.108.21.39?
158.108.21.39 is registered to Kasetsart University. The address falls within the 158.108.0.0/16 network block. Registration is held at ARIN.
Where is 158.108.21.39 located?
Geolocation data places 158.108.21.39 in London. The local time zone is Asia/Bangkok. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.
Is 158.108.21.39 malicious or safe?
158.108.21.39 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 158.108.21.39?
The reverse DNS (PTR) record for 158.108.21.39 is icpc.cs.sci.ku.ac.th. This hostname is forward-confirmed, meaning it resolves back to the same address.
What ports are open on 158.108.21.39?
Responsive ports observed on 158.108.21.39 include 80, 443. Port visibility reflects the most recent scan and may change as the host's configuration or firewall rules change.