5.255.251.134📋 Copy

# IP Intelligence Briefing: 5.255.251.134/32

## Executive Summary

IP address 5.255.251.134 is a low-risk (score: 25) address associated with YANDEX LLC. The address is currently firewalled with no active services and is identified as a Yandex spider host. No active threat indicators are present, but the subnet shows moderate abuse density (0.5) with 2 threat siblings requiring monitoring.

## Ownership and Network Classification

• Organization: YANDEX LLC
• Network: YANDEX-5-255-251-128 (5.255.251.128/25)
• ASN: Not resolved
• RIR: RIPE
• Classification: Infrastructure / No Services (Firewalled)

## Geolocation Analysis

• Country: Turkey (TR), Istanbul
• Geolocation Consensus: Validated across multiple sources
• Note: Geolocation inconsistencies observed in historical data with some sources indicating Russia (RU). This may reflect Yandex's infrastructure distribution.

## DNS and Hostname Information

• Reverse DNS: 5-255-251-134.spider.yandex.com
• Forward Resolution: Confirmed
• Domain: yandex.com
• Email Authentication: SPF and DMARC records present

## Threat Assessment

• Risk Score: 25 (Low Risk)
• Abuse Confidence Score: Not calculated
• Blacklist Status: Listed on 1 of 8 DNSBL lists
• Known Campaigns: None identified
• Tor Exit Node: No
• Known Attacker: No

## Services and Network Activity

• Open Ports: None detected
• HTTP/TLS Services: None active
• Connection State: Firewalled / No Services
• Service Purpose: Infrastructure (Spider/Crawler)

## Neighborhood Analysis

• Subnet: 5.255.251.134/24
• Abuse Density: 0.5 (Moderate)
• Subnet Classification: Mostly Clean
• Total Siblings: 4
• Active Siblings: 1
• Threat Siblings: 2
• Neighbor IPs: 5.255.251.129, 5.255.251.131, 5.255.251.132 (all risk score: 25)

## Observation History (21 observations)

Recent activity indicates:

• Port scanning activity detected
• Ownership stability maintained
• Subnet abuse density at 0.5
• Operator score: 0.3478 (Basic)
• No persistent malicious behavior detected
• Threat observation count: 0

## Threat Indicators

• Threat Feeds: None
• Known Campaigns: None
• Correlated IPs: 0
• Certificate Matches: 0

## Recommended Actions

Based on current risk profile, the following actions are recommended:

1. Firewall Rule: Allow inbound traffic (low-risk infrastructure IP)

2. Monitoring: Monitor for changes in DNSBL listing status

3. Subnet Awareness: Be aware of 2 threat siblings in 5.255.251.0/24 subnet

4. Block Status: No active blocking recommended

## Risk Narrative

The IP address 5.255.251.134 represents a Yandex infrastructure spider host with current low risk. While the address itself shows no active malicious behavior, the subnet environment (5.255.251.0/24) exhibits moderate abuse density with 2 threat-sibling IPs. The 1 DNSBL listing on 8 total lists warrants periodic review. Given the firewalled state and lack of active services, this IP presents minimal immediate threat but should be monitored for behavioral changes or subnet-wide abuse patterns.

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*Intelligence generated using IPDebrief threat intelligence platform data.*

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