171.237.177.172
🏢 Ownership & Registration
| Organization | IRT-VNNIC-AP |
| ASN | AS38731 |
| Network Name | VIETTEL-VN |
| CIDR Block | 171.224.0.0/11 |
| RIR | APNIC |
| Country | VN |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | 172.0-24.177.237.171.in-addr.arpa |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 172.0-24.177.237.171.in-addr.arpa |
🔐 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 | — |
| 3389 | rdp | tcp | — |
| Closed Ports | 22, 25, 8080, 8443 (3 open / 7 scanned) | ||
| Server | Web server detected |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | *.viglacera.vnowa.viglacera.vnmail.viglacera.vnautodiscover.viglacera.vnwww.viglacera.vnviglacera.vn |
| Valid From | 2026-07-10T07:47:06+00:00 |
| Valid Until | 2027-01-21T09:59:11+00:00 |
| TLS Protocol | Tls12 |
| Cipher Suite | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 |
| Signature Algorithm | sha256RSA |
| Validity Period | 195 days |
🛡️ Public Network Snapshot
| Origin ASN | AS38731 |
| Network Prefix | 171.237.176.0/23 |
| Route mapping | Found |
| HSTS | Not detected |
| CSP | Not detected |
| HTTP/2 | Enabled |
🎯 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 | 25% | 1 | 1 |
| ownership | 0% | 0 | 0 |
| reputation | 0% | 0 | 0 |
| geolocation | 0% | 0 | 0 |
| Overall | 12% | 3 | 3 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-18 23:50:35 UTC |
| Last Seen | 2026-09-02 22:39:30 UTC |
| Profile Built | 2026-09-02 22:41:46 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 25 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 171.237.177.172
Who owns the IP address 171.237.177.172?
171.237.177.172 is registered to IRT-VNNIC-AP. The address falls within the 171.224.0.0/11 network block. Registration is held at APNIC.
Where is 171.237.177.172 located?
Geolocation data places 171.237.177.172 in Boston, Hanoi, Vietnam. The local time zone is Asia/Ho_Chi_Minh. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 171.237.177.172 malicious or safe?
171.237.177.172 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 is the hostname for 171.237.177.172?
The reverse DNS (PTR) record for 171.237.177.172 is 172.0-24.177.237.171.in-addr.arpa. This hostname is not forward-confirmed, so it should be treated as a weak signal.
What ports are open on 171.237.177.172?
Responsive ports observed on 171.237.177.172 include 80, 443, 3389. Port visibility reflects the most recent scan and may change as the host's configuration or firewall rules change.