171.233.137.163
IP Intelligence Dossier
Your IP: 216.73.217.59
🏢 Ownership & Registration
| Organization | Unknown |
| ASN | — |
| Network Name | — |
| CIDR Block | — |
| RIR | — |
| Country | — |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | dynamic-ip-adsl.viettel.vn |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | dynamic-ip-adsl.viettel.vn |
🔐 DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Not verified |
| DNSSEC | Not signed |
| 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 | — |
| Closed Ports | 22, 25, 3389, 8080, 8443 (2 open / 7 scanned) | ||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
A self-signed certificate was detected. This is common for development servers, internal services, or IoT devices.
CN=VIETTEL, OU=Viettel High Technology Industries Corporation, O=VIETTEL GROUP, L=Nam Tu Liem, S=HN, C=VN
Issued by CN=VIETTEL, OU=Viettel High Technology Industries Corporation, O=VIETTEL GROUP, L=Nam Tu Liem, S=HN, C=VN
Self-signed: Yes
| SANs | None |
| Valid From | 2021-07-01T07:18:14+00:00 |
| Valid Until | 2031-06-29T07:18:14+00:00 |
| TLS Protocol | Tls12 |
| Cipher Suite | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 |
| Signature Algorithm | sha256RSA |
| Validity Period | 3650 days |
🛡️ Public Network Snapshot
| Origin ASN | AS7552 |
| Network Prefix | 171.233.136.0/21 |
| Route mapping | Found |
| HSTS | Not detected |
| CSP | Not detected |
| HTTP/2 | Enabled |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-10-08 10:19:50 UTC |
| Last Seen | 2026-10-08 10:19:50 UTC |
| Profile Built | 2026-10-08 10:26:06 UTC |
| Data Freshness | Live |
| Signal Types | 10 |
| Total Observations | 10 |
🔍 10 signal types · 10 observations collected
This report is generated from 10+ independent intelligence signals including
ownership records, DNS analysis, BGP routing, TLS certificates, port scanning, threat feeds,
behavioral fingerprinting, and more.
Full dossier details are available via our API.
Full dossier details are available via our API.
❓ Frequently Asked Questions About 171.233.137.163
Is 171.233.137.163 malicious or safe?
171.233.137.163 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 171.233.137.163?
The reverse DNS (PTR) record for 171.233.137.163 is dynamic-ip-adsl.viettel.vn. This hostname is not forward-confirmed, so it should be treated as a weak signal.
What ports are open on 171.233.137.163?
Responsive ports observed on 171.233.137.163 include 80, 443. Port visibility reflects the most recent scan and may change as the host's configuration or firewall rules change.
ℹ️ About This Report
All data shown is publicly available network metadata — IP addresses do not reliably identify individuals.
Assessments are probabilistic and should not be used as sole basis for access control decisions.
To report an issue or request data review, contact admin@ipdebrief.com.