121.183.37.87
IP Intelligence Briefing: 121.183.37.87
Date: 2026-06-02
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**1. Core Profile**
- Risk Score: 25 (Low Risk)
- Ownership: Registered to IP Manager (ASN 4766, KT Corporation, South Korea).
- Geolocation:
- City: Andong, Gyeongsangbuk-do, South Korea
- Coordinates: 35.91°N, 127.77°E
- ISP: KT Corporation (Mobile Carrier: KT, LTE/5G).
- Network Role: Mobile IP (KT Corporation), no cloud/CDN/VPN/Proxy indicators.
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**2. Threat & Security Indicators**
- Threat Signals: No malicious indicators (no blacklists, spam, or campaigns).
- DNS & Services:
- No open ports, TLS certificates, or HTTP services detected.
- DNSSEC validated, no DNSBL listings.
- Control Plane:
- BGP prefix: 121.160.0.0/11 (KIXS-AS-KR-KR).
- Route stability: Unstable (route changes in last 30 days).
- DNSSEC: Valid.
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**3. Observation History (Last 30 Days)**
- Consistency: Stable geolocation and network signals.
- Key Observations:
- Mobile network activity (KT, LTE/5G).
- Geolocation inferred with 250km accuracy radius.
- No spikes in threat or abuse signals.
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**4. Relationships & Network Context**
- Linked Networks:
- Multiple relationships to KORNET-KR (South Korean network).
- Subnet: 121.183.37.87/24 (abuse density: 0%).
- Neighbors: No active neighbors detected in the /24 subnet.
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**5. Recommendations**
- Monitor: Track route stability and network dynamics, as BGP instability persists.
- Verify: Confirm mobile carrier activity aligns with expected KT Corporation infrastructure.
- No Action Required: No immediate threat or abuse indicators detected.
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Summary: 121.183.37.87 is a low-risk mobile IP under KT Corporation in South Korea. No malicious activity detected; however, monitor BGP stability and network relationships for anomalies.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | IP Manager |
| ASN | AS4766 |
| Network Name | — |
| CIDR Block | — |
| RIR | APNIC |
| Country | — |
| 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 | Mobile |
| 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 | 24% | 2 | 3 |
| routing | 17% | 1 | 1 |
| services | 8% | 1 | 1 |
| ownership | 24% | 2 | 3 |
| reputation | 24% | 1 | 3 |
| geolocation | 32% | 2 | 3 |
| Overall | 21% | 9 | 14 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-07 23:03:35 UTC |
| Last Seen | 2026-06-22 11:48:44 UTC |
| Profile Built | 2026-06-22 11:52:24 UTC |
| Data Freshness | Live |
| Signal Types | 18 |
| Total Observations | 20 |
Full dossier details are available via our API.