52.167.144.236📋 Copy

# INTELLIGENCE BRIEFING: 52.167.144.236/32

Classification: Moderate Risk – Microsoft Bingbot Infrastructure

Date: Current Analysis

Analyst: IPDebrief Intelligence Unit

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## EXECUTIVE SUMMARY

IP 52.167.144.236 is identified as Microsoft Corporation infrastructure (ASN 8075) operating as a Bingbot search crawler. The IP resides in a high-abuse density neighborhood (52.167.144.0/24) with significant sibling threat activity. Despite the IP's legitimate Microsoft designation, neighborhood context warrants monitoring. Risk score: 40/100.

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## OWNERSHIP & INFRASTRUCTURE

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## THREAT INDICATORS

• Risk Score: 40 (Moderate Risk)
• Abuse Confidence: None reported
• Blacklist Status: Not listed (0/0)
• Known Attacker: False
• Spam Source: False
• Tor Exit Node: False
• Campaign Correlation: None detected

Threat Indicators: No active threat indicators. IP shows no malicious behavior, known campaign associations, or blacklist presence.

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## NEIGHBORHOOD ANALYSIS (52.167.144.0/24)

• Abuse Density: 0.5476 (High Abuse Classification)
• Total Siblings: 84
• Active Siblings: 51
• Threat Siblings: 46 (90% of active siblings flagged as threats)
• Inherited Risk Score: 21

Assessment: The /24 subnet exhibits elevated abuse density with 46 of 51 active sibling IPs classified as threats. This neighborhood-level risk does not appear to correlate with the subject IP's legitimate Microsoft designation.

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## OBSERVATION HISTORY

Total Observations: 21 signals

Trend: Consistent classification as "high_abuse" subnet with fluctuating abuse density between 0.5476 and 0.6588. No escalation in threat activity observed.

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## NETWORK RELATIONSHIPS

• DNS Associations: msnbot-52-167-144-236.search.msn.com (forward confirmed)
• Network Associations: MSFT (Microsoft)
• PTR Record: ms nbot-52-167-144-236.search.msn.com
• Forward Hostnames: 1 (msn.com domain)

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## SERVICES & FINGERPRINT

• Open Ports: None detected
• TLS Certificate: None
• HTTP Title: None
• Service Banner: None
• Fingerprint: Unable to complete (no services running)

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## RECOMMENDED ACTIONS

Based on risk profile and neighborhood context, the following actions are recommended:

Note: These rules are probabilistic. The IP is Microsoft Bingbot infrastructure. Blocking may impact legitimate Bing search crawler functionality. Recommend evaluating against business requirements before enforcement.

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## INTELLIGENCE ASSESSMENT

The IP 52.167.144.236 is Microsoft Bingbot infrastructure. While the individual IP shows no malicious indicators, the high-abuse neighborhood context (46 threat siblings in /24) suggests potential reputation contamination. The IP's "Firewalled / No Services" classification and lack of open ports indicate it is likely a passive infrastructure endpoint rather than an active threat.

Recommendation: Monitor neighborhood activity. If the organization has strict requirements for Microsoft Bingbot traffic, implement allowlisting exceptions. Otherwise, the moderate risk score and lack of direct threat indicators support a block decision with awareness of potential false positives.

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