221.120.57.172
IP Intelligence Briefing: 221.120.57.172
Date: 2026-06-05
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**1. Core Profile**
- Risk Score: 80 (High Risk)
- Geolocation: Taiwan (TW), Latitude 23.7, Longitude 120.96
- Ownership: Unregistered (ASN/ORG details missing)
- Network Role: Firewalled / No Services (no open ports, no TLS/http services)
- Threat Indicators: No direct malicious indicators (no known campaigns, spam, or Tor links).
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**2. Observation History**
- Recent Activity:
- Alienvault-OTX Signal (2026-06-05): Detected 19 "pulses" (potential threat activity), though no specific malware or campaign names.
- Multi-Signal Inference (2026-06-03): Moderate confidence (52%) in geolocation and routing.
- Operator Score: 0.3478 (Basic), suggesting limited network infrastructure oversight.
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**3. Relationships**
- DNS Associations:
- Linked to `221-120-57-172.emome-ip.hinet.net` (Hinet.net domain).
- DNSSEC and CAA records present, but no email authentication (no DMARC/SPF).
- No Direct Threat Links: No known malicious campaigns, spam, or attacker associations.
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**4. Subnet Neighborhood**
- Subnet: 221.120.57.0/24
- Abuse Density: 50% (mixed risk).
- Key Neighbors:
- 221.120.57.125: High risk (80), same provider/ASN.
- 221.120.57.174: Low risk (15), same provider/ASN.
- Note: High-risk neighbor (125) suggests potential subnet-wide compromise or shared infrastructure.
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**5. Control Plane & Infrastructure**
- BGP Prefix: 221.120.57.0/24 (AS17421).
- Routing Stability: Unstable (route changes in 30d).
- DNSSEC Validity: Confirmed.
- DNSBL Listings: 5/8 lists (potential abuse risk).
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**6. Recommendations**
- Monitor: Track 221.120.57.125 (high-risk neighbor) for suspicious activity.
- Investigate: Verify Hinet.net DNS associations for potential spoofing or misconfiguration.
- Block/Restrict: Consider blocking the IP due to high risk, especially if it’s part of a larger network.
- Check Subnet: Review 221.120.57.0/24 for shared infrastructure risks.
Note: No clear malicious activity detected, but high-risk profile and subnet context warrant further scrutiny.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Unknown |
| ASN | — |
| Network Name | — |
| CIDR Block | — |
| RIR | — |
| Country | — |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | 221-120-57-172.emome-ip.hinet.net |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | 221-120-57-172.emome-ip.hinet.net |
🔐 DNS Hygiene
| Hygiene Score | 80% (Excellent) |
| SPF | Present |
| DMARC | Not configured |
| FCrDNS | Verified |
| DNSSEC | Valid |
| CAA | Present |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Firewalled / No Services |
| Network Tier | Tier 3 — Basic operator with some routing infrastructure |
🔌 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 | 30% | 2 | 3 |
| routing | 13% | 1 | 1 |
| services | 8% | 1 | 1 |
| ownership | 19% | 2 | 2 |
| reputation | 24% | 1 | 3 |
| geolocation | 21% | 2 | 2 |
| Overall | 19% | 9 | 12 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-07 23:04:13 UTC |
| Last Seen | 2026-06-26 14:31:36 UTC |
| Profile Built | 2026-06-23 08:41:20 UTC |
| Data Freshness | Live |
| Signal Types | 19 |
| Total Observations | 21 |
Full dossier details are available via our API.