5.167.71.178📋 Copy

# IP INTELLIGENCE BRIEFING: 5.167.71.178/32

## Executive Summary

IP 5.167.71.178 is classified as a Moderate Risk (Score: 49) residential endpoint located in Cheboksary, Chuvash Republic, Russia. The address is flagged as a known attacker with 1 active blacklist entry (blocklist.de). The IP belongs to ER-Telecom Holding's Cheboksary branch (AS57026) and resides within a high-abuse density subnet (5.167.71.0/24). Immediate defensive action is recommended.

## Ownership and Geolocation

• Organization: Network Operation Center CJSC ER-Telecom Holding Cheboksary branch
• ASN: 57026 (ERTelecom)
• Country: RU (Russia)
• City: Cheboksary
• Region: Chuvash Republic
• Network Type: Residential PPPoE endpoint
• PTR Hostname: 5x167x71x178.dynamic.cheb.ertelecom.ru

## Threat Indicators

• Known Attacker: YES
• Blacklist Count: 1 (blocklist.de)
• Is Tor Exit: NO
• Spam Source: NO
• Abuse Confidence: Present in threat feeds
• DNSBL Listed: Yes (1 of 8 lists)

## Network Environment

The IP is part of the 5.167.71.0/24 subnet, classified as high_abuse. Neighborhood analysis reveals:

• Total Siblings: 256 IPs
• Active Siblings: 160
• Abuse Density: High (1.0)
• Risk Distribution: 41 medium-risk, 59 low-risk, 0 high-risk neighbors
• Subnet Inherited Risk: 40

The subnet's abuse profile indicates concentrated malicious activity, suggesting coordinated or opportunistic abuse from this residential block.

## Historical Observation (48 total signals)

Recent monitoring activity shows 48 observations recorded on 2026-06-24:

• Most Recent: 21:18 UTC (2026-06-24)
• Risk Label Trend: "Minimal" across multiple observations
• Threat Persistence: Single threat observation recorded
• Stability: No persistent malicious behavior detected over time

Historical data indicates sporadic threat activity rather than sustained malicious operation.

## Technical Profile

• Open Ports: None detected
• HTTP/TLS Services: None observed
• Certificates: 0 TLS certificates
• Reverse DNS: Resolves to dynamic ERTelecom residential hostname
• BGP Prefix: 5.167.68.0/22
• Route Stability: Unstable
• RPKI State: Not validated

## Recommended Actions

Severity: HIGH

Recommended Action: Block or rate-limit at network edge

Implementation Rules

• iptables: `iptables -A INPUT -s 5.167.71.178 -j DROP`
• nftables: `nft add rule inet filter input ip saddr 5.167.71.178 drop`
• nginx: `deny 5.167.71.178;`
• Cloudflare WAF: Block with expression `ip.src eq 5.167.71.178`
• AWS WAF: Add to block list with CIDR 5.167.71.178/32

## Intelligence Assessment

This IP represents a defensive security concern due to its known attacker classification and high-abuse neighborhood context. The single blacklist entry combined with the subnet's abuse density warrants immediate blocking. No evidence of persistent malicious behavior exists, but the IP should be treated as actively suspicious until further observation confirms otherwise.

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