## THREAT INTELLIGENCE BRIEFING: 216.73.161.153/32
Classification: Low Risk / Infrastructure IP
Report Date: Current analysis cycle
Assessment: Non-malicious VPN infrastructure endpoint
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**1. OWNERSHIP AND IDENTIFICATION**
- Organization: Prefixx, Inc. (ASN: 206092)
- Network Block: 216.73.160.0/22 (PFX-EXPRESSVPN)
- Classification: VPN Service Provider
- Status: Firewalled / No services actively running
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**2. RISK PROFILE**
- Overall Risk Score: 20/100 (Low Risk)
- Abuse Confidence Score: Not available
- Blacklist Status: Not listed (0 blacklist entries)
- Known Threat Indicators: None detected
- Campaign Association: No known threat campaigns
- Tor/Proxy Status: Not a Tor exit node or proxy
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**3. NETWORK CHARACTERISTICS**
- Services: No open ports detected
- DNS Resolution: No PTR records; no forward resolution
- SSL/TLS: No certificates or services exposing TLS
- Geolocation: New York, US (geolocation confidence: moderate)
- Route Stability: Route changes observed; origin ASN: 206092
- RTT Validation: 20.1ms observed vs. 119.4ms minimum possible for US location indicates potential geolocation discrepancy
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**4. NEIGHBORHOOD ANALYSIS (216.73.161.0/24)**
- Subnet Classification: Clean
- Abuse Density: 3.7%
- Total Siblings: 54 (20 active)
- Threat Siblings: 2
- Risk Distribution: 0 high, 2 medium, 51 low risk
- Notable Neighbors:
- 216.73.161.80 (Risk: 25)
- 216.73.161.94 (Risk: 25)
- 216.73.161.98 (Risk: 20)
- 216.73.161.101 (Risk: 20)
- 216.73.161.105 (Risk: 20)
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**5. OBSERVATION HISTORY**
- Total Observations: 15 signals recorded
- Ownership Changes: 0 (stable)
- Threat Persistence Days: 0
- Threat Observation Count: 0
- Persistent Malicious Activity: None detected
- Recent Activity: All observations within current analysis window show no change in risk posture
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**6. SECURITY RECOMMENDATIONS**
ACTION REQUIRED: None
FIREWALL RULES: Not recommended - IP is legitimate VPN infrastructure
MONITORING: Standard baseline monitoring sufficient
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**7. ANALYST NOTES**
IP 216.73.161.153 represents legitimate VPN infrastructure owned by Prefixx, Inc. The IP shows no malicious indicators, no active services, and minimal threat presence. The subnet exhibits low abuse density with only 2 threat siblings among 54 total addresses. No firewall blocking or enhanced monitoring is warranted at this time. The RTT geolocation discrepancy warrants standard validation but does not indicate malicious activity.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
π’ Ownership & Registration
| Organization | Prefixx, Inc. |
| ASN | AS206092 |
| Network Name | PFX-EXPRESSVPN |
| CIDR Block | 216.73.160.0/22 |
| RIR | ARIN |
| Country | United States |
| Abuse Contact | Available via RDAP |
π DNS Intelligence
| PTR Record | No PTR |
| Forward Confirmed | No β PTR hostname does not resolve back to this IP (weak signal) |
π DNS Hygiene
| Hygiene Score | 20% (Poor) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Not configured |
βοΈ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Firewalled / No Services |
| Network Tier | Unknown β Insufficient routing data to classify |
π 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 | β |
| HTTP Title | β |
π TLS Certificate
| SANs | None |
| Valid From | β |
| Valid Until | β |
π― Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 25% | 1 | 1 |
| routing | 25% | 1 | 1 |
| services | 25% | 1 | 1 |
| ownership | 0% | 0 | 0 |
| reputation | 0% | 0 | 0 |
| geolocation | 25% | 1 | 1 |
| Overall | 16% | 4 | 4 |
| Data Coherence | Mostly Consistent (80%) β 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
π Observation Timeline π Live
| First Seen | 2026-07-23 07:48:53 UTC |
| Last Seen | 2026-07-29 17:25:43 UTC |
| Profile Built | 2026-07-29 17:41:28 UTC |
| Data Freshness | Live |
| Signal Types | 18 |
| Total Observations | 18 |
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