171.231.194.157
IP Intelligence Briefing: 171.231.194.157
Date: June 8, 2026
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**1. Core Profile**
- Risk Score: 25 (Low Risk)
- Ownership:
- ASN: 7552 (IRT-VNNIC-AP, Vietnam)
- Geolocation: Da Nang, Vietnam (APNIC registry)
- Threat Indicators:
- No malicious activity, spam, or known attacker associations.
- No DNSBL listings or threat feeds.
- Network Role:
- Not a cloud, CDN, residential, or mobile IP.
- BGP prefix: 171.231.192.0/21 (Viettel Group, Vietnam).
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**2. Observation History**
- Recent Activity (June 8, 2026):
- Minimal risk signals (score: 0.15) with no DNS anomalies.
- Traceroute to 23 hops (via Comcast, Cogent).
- No open ports or TLS services detected.
- Long-Term Trends:
- Stable ownership (no recent ASN changes).
- No persistent malicious behavior.
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**3. Relationships**
- Network Associations:
- Linked to VIETTEL-VN (Viettel Group) via BGP and DNS.
- DNS records: `dynamic-adsl.viettel.vn` (SPF/DMARC configured).
- Certificates/Services:
- No TLS certificates or HTTP services detected.
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**4. Subnet Neighbors**
- Subnet: 171.231.194.0/24 (abuse density: 0.167).
- High-Risk Neighbor:
- 171.231.194.164 (risk score: 80).
- Low-Risk Neighbors:
- Most IPs in the subnet (e.g., 171.231.194.14, 171.231.194.108) have low risk scores.
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**5. Actionable Insights**
- No Immediate Threat: The IP itself is low-risk and appears legitimate.
- Monitor Neighbors: Investigate the high-risk neighbor (171.231.194.164) for potential lateral movement or subnet-wide threats.
- Verify DNS: Confirm `dynamic-adsl.viettel.vn` is a legitimate Viettel asset to avoid false positives.
- Baseline Subnet: Use subnet abuse density metrics to detect anomalies in the 171.231.194.0/24 range.
Recommendation: No immediate mitigation required, but continuous monitoring of the subnet and high-risk neighbor is advised.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | IRT-VNNIC-AP |
| ASN | AS7552 |
| Network Name | — |
| CIDR Block | — |
| RIR | APNIC |
| Country | — |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | dynamic-adsl.viettel.vn |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | dynamic-adsl.viettel.vn |
🔐 DNS Hygiene
| Hygiene Score | 60% (Good) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Firewalled / No Services |
| Network Tier | Unknown — Insufficient routing data to classify |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Closed Ports | 22, 25, 80, 443, 3389, 8080, 8443 (0 open / 7 scanned) | ||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🎯 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 | 19% | 2 | 2 |
| ownership | 27% | 2 | 3 |
| reputation | 18% | 1 | 2 |
| geolocation | 21% | 2 | 2 |
| Overall | 21% | 10 | 13 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-18 21:27:28 UTC |
| Last Seen | 2026-06-18 20:02:36 UTC |
| Profile Built | 2026-06-18 18:07:31 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 49 |
Full dossier details are available via our API.