5.167.66.241
## IP Intelligence Briefing: 5.167.66.241/32
Classification: Moderate Risk (Score: 40) | Jurisdiction: Russian Federation | Infrastructure Type: Residential Endpoint
Ownership & Geolocation
The IP address 5.167.66.241 belongs to Network Operation Center CJSC ER-Telecom Holding Cheboksary branch (ASN 57026) and resolves to Cheboksary, Chuvash Republic, Russia. The address is allocated within a residential provider network with DNS PTR records pointing to 5x167x66x241.dynamic.cheb.ertelecom.ru. Network stability indicators show false route stability status, suggesting dynamic allocation patterns.
Threat Assessment
Current risk scoring indicates moderate risk with an abuse confidence score of 1. DNSBL enumeration shows 1 listing across 8 total blacklists. No active threat indicators, campaigns, or known attacker signatures were detected. The IP does not function as a Tor exit node, proxy, VPN, or CDN endpoint. Control plane data indicates minimal operator influence with an operator score of 0.1304.
Network Context & Neighborhood Analysis
The /24 subnet (5.167.66.0/24) contains 256 total siblings with 136 active endpoints. Risk distribution across sampled neighbors shows 77 low-risk, 23 medium-risk, and 0 high-risk addresses. Abuse density metrics classify the subnet as high_abuse. Related infrastructure includes 340 relationships, primarily same-network associations to ERTH-CHEB-PPPOE-22-NET.
Observation History
Analysis of 46 historical observations reveals consistent residential network behavior with no persistent malicious activity patterns. Recent signal observations (June 24, 2026 timeframe) indicate minimal operator influence and varying blacklist listing activity. Geo-validation attempts encountered ICMP blocking, resulting in distance validation of 7,919.7 km.
Recommendations
Firewall blocking is recommended due to moderate risk profile. Implementation rules provided for iptables, nftables, nginx, pfSense, Cloudflare WAF, and AWS WAF. No open ports or active services were detected during probing.
Intelligence Confidence: High
Action Priority: Medium - Monitor for escalation to high-risk classification
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 | 5x167x66x241.dynamic.cheb.ertelecom.ru |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 5x167x66x241.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 | |||
| Closed Ports | 22, 25, 80, 443, 3389, 8080, 8443 (0 open / 7 scanned) | ||
| 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 | 34% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 20% | 2 | 3 |
| reputation | 27% | 1 | 3 |
| geolocation | 24% | 2 | 3 |
| Overall | 22% | 10 | 16 |
| 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 05:45:02 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 49 |
Full dossier details are available via our API.