5.167.68.72📋 Copy

# IP INTELLIGENCE BRIEFING: 5.167.68.72/32

## Executive Summary

IP Address: 5.167.68.72/32

Risk Classification: Moderate Risk (Score: 49/100)

Network Role: Residential Endpoint

Threat Status: Known Attacker (DNSBL Listed)

Recommended Action: Block at network edge

---

## Ownership and Registration

• Organization: Network Operation Center CJSC ER-Telecom Holding Cheboksary branch
• ASN: 57026
• RIR: RIPE
• Geolocation: Cheboksary, Russia (RU)
• Network Block: 5.167.68.0/22 (Origin ASN: 57026)

---

## Threat Intelligence Indicators

• Reputation Status: Listed on 1 of 8 DNSBLs (blocklist.de)
• Known Attacker Flag: TRUE
• Abuse Confidence: Present but not quantified
• Campaign Correlation: No known active campaigns detected
• Tor Exit Node: No

---

## Network Behavior Analysis

• Connection Type: Residential broadband (ERTH-CHEB-PPPOE-22-NET)
• Service Classification: Standard residential endpoint (not CDN, hosting, or proxy infrastructure)
• DNS Resolution: Dynamic PTR hostname (5x167x68x72.dynamic.cheb.ertelecom.ru)
• Open Ports: None detected
• Reverse DNS: Forward confirmed; no reverse DNS validation available

---

## Historical Signal Analysis

Observation Window: 48 total observations over recent monitoring period

• Operator Score Trend: Consistently "Minimal" (0/8) across all observations
• Signal Types: Routing, reputation, services, ownership, geolocation dimensions covered
• Threat Persistence: No persistent malicious activity detected
• Risk Trajectory: Stable with no escalation observed

---

## Subnet Neighborhood Analysis (5.167.68.0/24)

• Total Siblings: 256 IPs
• Active Siblings: 48
• Abuse Density: 0.043 (4.3%)
• Threat Siblings: 11 IPs flagged as threats
• Classification: Clean subnet overall
• Risk Distribution: 85 medium-risk neighbors, 15 low-risk, 0 high-risk

---

## Related Entities (364 Relationships)

• Primary Network: ERTH-CHEB-PPPOE-22-NET (multiple network associations)
• Relationship Types: Network associations dominate relationship graph
• No: Certificate, hostname, or organizational entity links detected

---

## Recommended Security Actions

Immediate Actions:

1. Block at Network Edge: Implement IP-based blocking

2. Firewall Rules: Deploy recommended rules across infrastructure platforms

Platform-Specific Rules:

```bash

# iptables

iptables -A INPUT -s 5.167.68.72 -j DROP

# nftables

nft add rule inet filter input ip saddr 5.167.68.72 drop

# nginx

deny 5.167.68.72;

# pfSense

5.167.68.72/32

# Cloudflare WAF

{"description": "Block 5.167.68.72 — IPDebrief risk score 49", "action": "block", "filter": {"expression": "ip.src eq 5.167.68.72"}}

# AWS WAF

{"Addresses": ["5.167.68.72/32"], "Description": "IPDebrief risk 49"}

```

Monitoring Recommendations:

• Monitor for any escalation in threat indicators
• Review subnet-wide activity patterns (11 threat siblings identified)
• Consider geo-blocking if legitimate traffic not expected from Russian residential networks

---

## Intelligence Assessment

This IP represents a Russian residential endpoint with known attacker indicators and DNSBL listing. The threat level is moderate rather than critical, but the known attacker classification warrants defensive blocking. The subnet shows low-abuse-density characteristics with isolated threat activity. No evidence of infrastructure hosting or organized campaign participation detected.

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