5.167.66.136
IP Intelligence Briefing: 5.167.66.136
Date: 2026-06-07
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**1. Core Profile**
- Risk Score: 59 (Moderate Risk)
- Ownership: Registered to ER-Telecom Holding (RU), ASN 57026.
- Geolocation: Cheboksary, Russia (RU).
- Threat Indicators: Listed on blocklist.de (1 indicator).
- Network Role: Firewalled / No Services; no open ports or TLS certificates detected.
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**2. Threat Observations**
- Recent Activity:
- Single threat observation (June 7, 2026) with low confidence (0.28).
- No persistent malicious activity detected.
- Key Risks:
- Associated with a known blocklist (blocklist.de).
- No active scans or DNS anomalies detected.
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**3. Network Relationships**
- Subnet: 5.167.66.136/24
- Neighbors:
- 100 IPs in the subnet; abuse density is low (0).
- Neighboring IPs show mixed risk scores (40–59).
- Shared Network: Linked to ERTH-CHEB-PPPOE-22-NET (same provider).
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**4. Actionable Insights**
- Monitor: Track this IP for unexpected DNS changes or service activation.
- Investigate: Verify the blocklist.de entry context (e.g., spam, malware).
- Subnet Context: While the subnet has low abuse density, the IP’s blocklist status warrants closer scrutiny.
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Recommendation: Add to watchlist for persistent monitoring. No immediate mitigation required, but ensure alignment with organizational threat response protocols.
Source: IPDebrief Intelligence Platform
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Network Operation Center CJSC ER-Telecom Holding Cheboksary branch |
| ASN | AS57026 |
| Network Name | — |
| CIDR Block | — |
| RIR | RIPE |
| Country | — |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | 5x167x66x136.dynamic.cheb.ertelecom.ru |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 5x167x66x136.dynamic.cheb.ertelecom.ru |
🔐 DNS Hygiene
| Hygiene Score | 60% (Good) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Residential |
| Service Purpose | Residential Endpoint |
| Network Tier | End-User — Residential ISP endpoint |
🔌 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 | 22% | 3 | 3 |
| routing | 20% | 1 | 1 |
| services | 8% | 1 | 1 |
| ownership | 20% | 2 | 3 |
| reputation | 30% | 2 | 3 |
| geolocation | 24% | 2 | 3 |
| Overall | 21% | 11 | 14 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-07 23:05:23 UTC |
| Last Seen | 2026-06-26 18:12:13 UTC |
| Profile Built | 2026-06-27 05:50:52 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 50 |
Full dossier details are available via our API.