# 171.231.198.67 — IP Intelligence Summary

171.231.198.67 is an IPv4 address operated by IRT-VNNIC-AP (AS7552), geolocated to Da Nang, Vietnam. Its reverse DNS name is dynamic-adsl.viettel.vn. As of October 4, 2026, IPDebrief rates it Low Risk (25/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/171.231.198.67
- Last updated: 2026-10-04

## Ownership

- Organization: IRT-VNNIC-AP
- Network name: VIETTEL-VN
- Allocated block: 171.224.0.0/11
- ASN: AS7552 (https://ipdebrief.com/asn/7552)
- Regional registry: APNIC

## Location

- City: Da Nang
- Region: Da Nang
- Country: Vietnam
- Time zone: Asia/Ho_Chi_Minh

## Network classification

- Infrastructure type: —
- Datacenter / hosting: no
- Residential: no
- Mobile: no
- Anycast: no
- Tor exit node: no
- VPN: no
- Proxy: no

## Risk assessment

- Assessment: Low Risk (25/100)
- Blocklist listings: 0
- Suspicious activity indicators: no
- Spam source: no

## Reverse DNS

- dynamic-adsl.viettel.vn
- Forward-confirmed: no

## Analyst narrative

\# IP Intelligence Briefing: 171.231.198.67/32

\## Executive Summary

IP 171.231.198.67 is a Viettel Vietnam residential infrastructure IP with a Low Risk reputation score of 25. The address is classified as a firewalled endpoint with no active services detected. No threat indicators, malware signatures, or campaign correlations identified.

\## Ownership & Infrastructure

\- **Organization:** IRT-VNNIC-AP (Vietnam Internet Resource Management)

\- **Network Name:** VIETTEL-VN

\- **ASN:** 7552 (VN7552-AP)

\- **CIDR Block:** 171.224.0.0/11

\- **RIR:** APNIC (Asia Pacific)

\- **Registration:** APNIC RIR registry

\## Geolocation

\- **Country:** Vietnam (VN)

\- **City/Region:** Da Nang

\- **Coordinates:** 16.07°N, 108.22°E

\- **Timezone:** Asia/Ho_Chi_Minh

\- **GeoValidation:** Multiple signal sources confirm Vietnam origin

\## Network Classification

\- **Infrastructure Type:** Residential/Enterprise DSL

\- **Service Status:** Firewalled / No Services

\- **CDN/Proxy/VPN:** No

\- **Tor Exit Node:** No

\- **Bogon/Anycast:** No

\- **Mobile Carrier:** No

\## DNS Intelligence

\- **PTR Record:** dynamic-adsl.viettel.vn

\- **Forward Resolution:** dynamic-adsl.viettel.vn (unconfirmed)

\- **Email Authentication:** SPF enabled, DMARC enabled

\- **Hosted Domains:** None (0)

\## Threat Profile

\- **Risk Score:** 25 (Low Risk)

\- **Abuse Confidence:** Not flagged

\- **Blacklist Count:** 0 (0/8 DNSBL lists)

\- **Threat Indicators:** None detected

\- **Known Campaigns:** None

\- **Historical Observations:** 15 signals over monitoring period

\- **Threat Persistence:** 0 days (not persistently malicious)

\## Subnet Analysis (171.231.198.0/24)

\- **Total Siblings:** 12

\- **Abuse Density:** 0%

\- **Risk Distribution:** High (0), Medium (2), Low (9)

\- **Notable Neighbors:**

\- 171.231.198.171: Risk 45 (Medium)

\- 171.231.198.233: Risk 40 (Medium)

\- Remaining 9 IPs: Risk 0-25 (Low)

\## Relationships

\- **Network Association:** VIETTEL-VN (Same Network)

\- **DNS Associations:** dynamic-adsl.viettel.vn (3 associations)

\## Control Plane Status

\- **BGP Prefix:** 171.231.192.0/21

\- **Route Stability:** Unstable (isRouteStable: false)

\- **RPKI State:** Not validated

\- **Route Changes (30d):** 0

\## Security Recommendations

**No immediate blocking recommended.** The IP presents minimal threat indicators:

\- Low risk score (25)

\- No malware, spam, or attack signatures

\- Standard Viettel residential infrastructure

\- SPF/DMARC properly configured for email

**Monitor for:** Any changes in threat indicators, service enumeration, or behavioral anomalies. The subnet shows minimal abuse density with only 2 medium-risk neighbors out of 12.

**Action Priority:** LOW — Standard residential/business IP from major Vietnamese telco with no malicious indicators.

## Nearby addresses

- 171.231.198.24 (https://ipdebrief.com/171.231.198.24)
- 171.231.198.30 (https://ipdebrief.com/171.231.198.30)
- 171.231.198.35 (https://ipdebrief.com/171.231.198.35)
- 171.231.198.44 (https://ipdebrief.com/171.231.198.44)
- 171.231.198.103 (https://ipdebrief.com/171.231.198.103)
- 171.231.198.128 (https://ipdebrief.com/171.231.198.128)
- 171.231.198.137 (https://ipdebrief.com/171.231.198.137)
- 171.231.198.145 (https://ipdebrief.com/171.231.198.145)
- 171.231.198.152 (https://ipdebrief.com/171.231.198.152)
- 171.231.198.171 (https://ipdebrief.com/171.231.198.171)
- 171.231.198.173 (https://ipdebrief.com/171.231.198.173)
- 171.231.198.207 (https://ipdebrief.com/171.231.198.207)

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Source: IPDebrief, "171.231.198.67 IP intelligence", https://ipdebrief.com/171.231.198.67, updated 2026-10-04. Assessments are probabilistic.