5.167.66.90📋 Copy

## INTELLIGENCE BRIEFING: 5.167.66.90/32

Classification: Moderate Risk (Score: 40/100)

Report Date: 2026-06-24

Data Source: IPDebrief Intelligence Platform

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EXECUTIVE SUMMARY

IP 5.167.66.90 is a residential endpoint hosted by ER-Telecom Holding's Cheboksary branch (ASN 57026) in Russia. The IP exhibits moderate risk characteristics with no active threat indicators currently detected. Neighborhood analysis reveals elevated abuse density in the 5.167.66.0/24 subnet, warranting contextual monitoring.

OWNERSHIP & GEOLOCATION

• Organization: Network Operation Center CJSC ER-Telecom Holding Cheboksary branch
• ASN: 57026 (ER-Telecom Holding)
• Location: Cheboksary, Chuvash Republic, RU
• Network Block: 5.167.64.0/22 (BGP prefix: 5.167.64.0/22)
• Registration: RIR Ripe
• Reverse DNS: 5x167x66x90.dynamic.cheb.ertelecom.ru

NETWORK CLASSIFICATION

THREAT INDICATORS

• Current Threat Status: No active indicators
• Abuse Confidence: Not available
• Blacklist Count: 0 (DNSBL: 1 of 8 lists)
• Known Campaigns: None detected
• Spam Source: No
• Known Attacker: No

NEIGHBORHOOD ANALYSIS

Subnet: 5.167.66.0/24

• Total Siblings: 256
• Active Siblings: 134
• Abuse Density: High
• Risk Classification: High Abuse
• Inherited Risk: 40

Neighbor Risk Distribution:

• High Risk: 0 (0%)
• Medium Risk: 61 (61%)
• Low Risk: 39 (39%)

Notable neighbors include 5.167.66.3 and 5.167.66.4 (both risk score: 49), indicating concentrated activity within the subnet.

OBSERVATION HISTORY

• Total Observations: 49
• Recent Trend: Stable/Minimal operator scores (0.0)
• Threat Persistence: Not persistently malicious
• Ownership Changes: 0
• Threat Observation Count: 1

Historical signals show consistent "Minimal" operator scores across multiple observation windows (June 2026 timeframe), indicating no degradation in risk posture.

RELATIONSHIP GRAPH

• Total Relationships: 326
• Primary Relationship: Same Network (ERTH-CHEB-PPPOE-22-NET)
• Related Entities: Network-level associations only

SECURITY ACTIONS & RECOMMENDATIONS

Based on risk profile analysis:

1. Allow: Residential IP with no active threat indicators. Standard residential traffic patterns expected.

2. Monitor: Elevated neighborhood abuse density warrants contextual awareness for related IPs in 5.167.66.0/24.

3. Block: No immediate blocking required; monitor for behavioral changes.

SOC ACTION ITEMS

• Priority: LOW-MEDIUM
• Recommended Action: Continue standard monitoring. No immediate threat-based blocking advised.
• Context: This is a legitimate residential endpoint from a Russian ISP. Risk score of 40/100 falls in moderate range.
• Escalation Triggers: Monitor for sudden risk score increases, appearance on threat feeds, or correlation with active campaigns.

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Report Generated: Automated IP Intelligence Analysis

Status: Complete

This summary was generated by AI and may contain inaccuracies. Verify critical details independently.