171.231.194.41
171.231.194.41 is an IPv4 address operated by IRT-VNNIC-AP (AS7552), geolocated to Qui Nhon, Vietnam. Its reverse DNS name is dynamic-adsl.viettel.vn. As of October 12, 2026, IPDebrief rates it Moderate Risk (40/100); no anonymizing service was detected.
# Intelligence Briefing: 171.231.194.41/32
Classification: Low Risk | Status: Monitored
Date: 2026-07-29
## Executive Summary
IP 171.231.194.41 belongs to Viettel Group (ASN 7552) network VIETTEL-VN with a current risk score of 0. The target IP is identified as "Firewalled / No Services" with no open ports detected. While the IP shows no active malicious indicators, geolocation data indicates a significant discrepancy between reported location (Chicago, IL) and registered ownership (Vietnam).
## Ownership and Network Context
- Organization: IRT-VNNIC-AP / Viettel Group
- ASN: 7552 (VIETTEL-AS-AP)
- CIDR Block: 171.224.0.0/11
- RIR: APNIC
- Geolocation: US (Chicago, IL) — *Note: Discrepancy with Vietnam-based organization*
## Threat Indicators
- Risk Score: 0
- Blacklist Count: 0
- Tor Exit/Attacker/Spam Source: False
- Known Campaigns: None identified
- Threat Feeds: Empty
## Network Behavior
- Services: None detected (firewalled)
- DNS Records: No PTR hostnames; forward resolution not confirmed
- Control Plane: Route stability flagged as false; no BGP prefix data available
- Email Authentication: SPF and DMARC records present for viettel.vn domain
## Neighborhood Analysis
The /24 subnet (171.231.194.0/24) contains 19 sibling IPs with an abuse density of 0. Risk distribution shows 16 low-risk neighbors, 2 medium-risk, and 0 high-risk. Notable neighbors include:
- 171.231.194.32 (Risk: 49)
- 171.231.194.164 (Risk: 40)
- 171.231.194.17 (Risk: 30)
## Observation History
Thirteen signals observed over the monitoring period. Recent activity (2026-07-29) includes:
- DNSSEC validation confirmed for reverse lookup zone
- ASN 7552 associated with Viettel Group, Vietnam
- SPF and DMARC records configured for viettel.vn domain
- Eight blacklist listings detected with medium severity
## Recommended Actions
No immediate firewall rules or blocking recommendations generated due to low risk profile. However, the geolocation discrepancy warrants additional verification. The subnet shows moderate activity levels among neighboring IPs.
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Analyst Notes: Monitor for changes in geolocation data or emergence of threat indicators. The presence of blacklist listings (8 total) despite zero current risk score suggests historical activity that should be reviewed in context with observed traffic patterns.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | IRT-VNNIC-AP |
| ASN | AS7552 |
| Network Name | VIETTEL-VN |
| CIDR Block | 171.224.0.0/11 |
| RIR | APNIC |
| Country | VN |
| 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.vndynamic-ip-adsl.viettel.vn |
🔐 DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | 2/2 domains |
| DMARC | 2/2 domains |
| FCrDNS | Not verified |
| DNSSEC | Not signed |
| CAA | Not configured |
| Domains Checked | 2 domains |
☁️ 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 | — |
🛡️ Public Network Snapshot
| Origin ASN | AS7552 |
| Network Prefix | 171.231.192.0/21 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 17% | 2 | 4 |
| routing | 17% | 2 | 3 |
| services | 25% | 2 | 4 |
| ownership | 19% | 3 | 4 |
| reputation | 14% | 1 | 3 |
| geolocation | 25% | 2 | 4 |
| Overall | 19% | 12 | 22 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-20 12:28:01 UTC |
| Last Seen | 2026-10-12 22:41:41 UTC |
| Profile Built | 2026-10-12 22:42:55 UTC |
| Data Freshness | Live |
| Signal Types | 27 |
| Total Observations | 35 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 171.231.194.41
Who owns the IP address 171.231.194.41?
171.231.194.41 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 171.231.194.41 located?
Geolocation data places 171.231.194.41 in Qui Nhon, 31, 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 171.231.194.41 malicious or safe?
171.231.194.41 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 171.231.194.41?
The reverse DNS (PTR) record for 171.231.194.41 is dynamic-adsl.viettel.vn. This hostname is not forward-confirmed, so it should be treated as a weak signal.