101.13.5.50
Threat Intelligence Briefing: IP 101.13.5.50/32
Date: 2026-06-17
**Summary**
The IP 101.13.5.50/32 is associated with high-risk activity, including potential command-and-control (C2) infrastructure. It is registered to Johnny Wang under TAIWANMOBILE-NET (APNIC) and geolocated to Taipei, Taiwan. The subnet 101.13.5.0/24 has an abuse density of 81.8%, with 9 of 11 neighboring IPs classified as high-risk.
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**Key Findings**
1. Reputation & Risk
- Risk Score: 80/100 (High Risk)
- Threat Indicators: DNSBL listings (5/8 lists), potential C2 activity, and high subnet abuse density.
- Network Role: Single-service host (HTTPS-alt on port 8443).
2. Ownership & Geolocation
- ISP: TAIWANMOBILE-NET (APNIC)
- Location: Taipei, Taiwan (23.7°N, 120.96°E)
- ASN: 24158
3. Network Activity
- Subnet Abuse: 9/11 neighbors are high-risk, with 8 active and 9 flagged for threats.
- DNS Issues: Multiple failed DNS resolution attempts (timeout errors).
- Routing Anomalies: High RTT (250–255 ms) and inferred geographic plausibility discrepancies.
4. Historical Observations
- Recent Activity: Observed in June 2026 with DNSBL listings (5/8 lists) and traceroute anomalies.
- Persistence: No persistent malicious activity detected, but short-term threats noted.
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**Actionable Recommendations**
1. Block the IP: Implement firewall rules to block 101.13.5.50 using iptables, nftables, or cloud WAFs (e.g., AWS/Azure).
2. Monitor Subnet: Investigate high-risk neighbors in 101.13.5.0/24 for coordinated attacks or botnet activity.
3. DNS Investigation: Verify DNS resolution for associated domains (if available) to detect evasion tactics.
4. Threat Intelligence Feed Updates: Add the IP to DNSBLs and threat feeds for continuous monitoring.
Note: The IP’s association with a mobile carrier and high abuse density suggests potential misuse of network resources. Immediate containment is advised.
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*Generated by IPDebrief | Copyright © 2026 Jason Alberino. All rights reserved.*
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Johnny Wang |
| ASN | AS24158 |
| Network Name | TAIWANMOBILE-NET |
| CIDR Block | 101.8.0.0/13 |
| RIR | APNIC |
| Country | TW |
| 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 | 40% (Fair) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Present |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Single-Service Host |
| Network Tier | Tier 3 — Basic operator with some routing infrastructure |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 8443 | https-alt | tcp | — |
| Closed Ports | 22, 25, 80, 443, 3389, 8080 (1 open / 7 scanned) | ||
| Server | lighttpd/1.4.64 |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | 2022-11-22T18:47:37+00:00 |
| Valid Until | 2032-11-19T18:47:37+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_CHACHA20_POLY1305_SHA256 |
| Signature Algorithm | sha256RSA |
| Validity Period | 3650 days |
| Serial Number | 6D84D1635859AF383666AD8C84FA75222EBCAF88 |
| Thumbprint | 5AE1816DB5CC29C600313C001A79CBF3146537CA |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 28% | 2 | 4 |
| routing | 22% | 3 | 3 |
| services | 24% | 2 | 3 |
| ownership | 24% | 2 | 3 |
| reputation | 23% | 1 | 3 |
| geolocation | 32% | 2 | 3 |
| Overall | 25% | 12 | 19 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (65%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-07 23:03:24 UTC |
| Last Seen | 2026-06-26 02:14:27 UTC |
| Profile Built | 2026-06-22 05:35:09 UTC |
| Data Freshness | Live |
| Signal Types | 26 |
| Total Observations | 28 |
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