157.66.26.151
IP Intelligence Briefing: 157.66.26.151
Date: 2026-06-17
**Risk Profile**
- Risk Score: 80/100 (High Risk)
- Ownership: Registered to IRT-VNNIC-AP (Vietnam) under ASN 149107.
- Geolocation: Vietnam (latitude 16.17, longitude 107.83).
- Threat Indicators: No direct malicious activity detected, but flagged on 5/8 DNSBL lists (e.g., Spamhaus, Barracuda).
**Network Context**
- Subnet: 157.66.26.0/23 (abuse density: 1/10).
- Neighbors: 1 sibling IP (157.66.26.248) with a risk score of 25.
- Network Role: Firewalled / No Services; no CDN, mobile, or residential indicators.
**Historical Observations**
- Recent Activity:
- DNSSEC invalid (June 12, 2026).
- 5 DNSBL listings (Spamhaus, Barracuda, etc.) since June 6, 2026.
- No persistent threat indicators or malware campaigns.
**Recommended Actions**
1. Block the IP using firewall rules:
- iptables: `iptables -A INPUT -s 157.66.26.151 -j DROP`
- Cloudflare WAF: Block IP with description "IPDebrief risk 80".
- AWS WAF: Add `157.66.26.151/32` to a rule.
2. Monitor DNSSEC validation and investigate DNSBL listings.
3. Review subnet activity (157.66.26.0/23) for potential lateral movement.
**Conclusion**
This IP exhibits elevated risk due to DNSBL associations and incomplete DNSSEC validation, but no active malicious behavior is detected. The subnet has low abuse density, but the IP’s high risk score warrants immediate blocking and further investigation into its network context.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | IRT-VNNIC-AP |
| ASN | AS149107 |
| Network Name | DIENTUTPT-VN |
| CIDR Block | 157.66.26.0/23 |
| RIR | ARIN |
| Country | VN |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR Record | No PTR |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
🔐 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 | Firewalled / No Services |
| Network Tier | Unknown — Insufficient routing data to classify |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| 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 | 33% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 13% | 1 | 1 |
| ownership | 27% | 2 | 3 |
| reputation | 24% | 1 | 3 |
| geolocation | 21% | 2 | 2 |
| Overall | 22% | 9 | 14 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-07 23:03:48 UTC |
| Last Seen | 2026-06-26 08:23:16 UTC |
| Profile Built | 2026-06-22 18:31:35 UTC |
| Data Freshness | Live |
| Signal Types | 15 |
| Total Observations | 16 |
Full dossier details are available via our API.