5.167.64.223📋 Copy

# INTELLIGENCE BRIEFING: IP 5.167.64.223

Classification: Moderate Risk

Date: Current Analysis

Analyst: IPDebrief Intelligence Team

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## EXECUTIVE SUMMARY

IP 5.167.64.223 was assessed as a moderate-risk residential endpoint located in Cheboksary, Russia. The IP belongs to ER-Telecom Holding's Cheboksary branch infrastructure (ASN 57026) and operates within a /24 subnet classified as high-abuse. No active threat indicators were detected, but the subnet exhibits elevated abuse density with 178 active sibling IPs.

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## OWNERSHIP AND GEOLOCATION

The IP address is registered to Network Operation Center CJSC ER-Telecom Holding Cheboksary branch under ASN 57026. Geolocation data consistently places the endpoint in Cheboksary, Russia (RU) with geographic consensus validation enabled. The PTR hostname resolves to `5x167x64x223.dynamic.cheb.ertelecom.ru`, indicating a dynamic residential allocation scheme typical of consumer broadband infrastructure.

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## RISK ASSESSMENT

Overall Risk Score: 40/100 (Moderate Risk)

Key risk indicators:

• DNSBL listings: 1 out of 8 total lists flagged
• Control plane stability: Route NOT stable (5.167.64.0/22 BGP prefix)
• Neighborhood abuse density: High (subnet classification)
• Sibling activity: 178 active IPs out of 256 total in /24 range

No direct threat indicators were observed:

• Not a known attacker
• Not a Tor exit node
• Not identified as a spam source
• Zero active blacklist entries in threat feeds

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## NETWORK CHARACTERISTICS

The IP operates in a PPPOE residential network (ERT-HEB-PPPOE-22-NET) with no detected services. Port scanning revealed no open ports, and the endpoint is classified as residential infrastructure. DNS records show proper SPF and DMARC configuration for the parent domain.

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## TEMPORAL ANALYSIS

Historical data from 48 observations shows:

• Connection type consistently residential
• Geographic location stable in Russia
• Threat persistence: Not persistently malicious
• Threat observation count: 1
• Average observation confidence: 0.40

The IP has not demonstrated sustained malicious behavior patterns.

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## RELATED INFRASTRUCTURE

Relationship analysis identified 323 related entities, predominantly same-network connections to the ERT-HEB-PPPOE-22-NET network segment. Neighbor analysis of the 5.167.64.0/24 subnet revealed:

• Risk Distribution: 77 low risk, 23 medium risk, 0 high risk
• Abuse Density: 0
• Individual Neighbor Scores: Range 25-49 (moderate)

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## RECOMMENDED ACTIONS

Given the moderate risk score of 40 and high-abuse subnet classification, the following defensive measures are recommended:

Firewall Rules:

```bash

# iptables

iptables -A INPUT -s 5.167.64.223 -j DROP

# nftables

nft add rule inet filter input ip saddr 5.167.64.223 drop

# nginx

deny 5.167.64.223;

# pfSense

5.167.64.223/32

# Cloudflare WAF

{"description":"Block 5.167.64.223 — IPDebrief risk score 40","action":"block"}

# AWS WAF

{"Addresses":["5.167.64.223/32"],"Description":"IPDebrief risk 40"}

```

Operational Recommendations:

• Monitor for increased activity patterns from this subnet
• Evaluate broader subnet 5.167.64.0/24 for policy decisions
• No immediate blocking required for low-risk traffic; monitor for behavioral changes

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## CONCLUSION

IP 5.167.64.223 represents a moderate-risk residential endpoint within a high-abuse Russian residential ISP infrastructure. While no active malicious indicators were detected, the subnet's abuse density warrants monitoring. Recommended action: Block or monitor based on organization's risk tolerance threshold and specific traffic patterns observed.

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*Report generated by IPDebrief Intelligence Platform*

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