15.235.96.53📋 Copy

INTELLIGENCE BRIEFING: 15.235.96.53/32

Classification: MODERATE RISK | Date: Current | Status: Active Monitoring

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EXECUTIVE SUMMARY

IP address 15.235.96.53 operates within a high-abuse density subnet (15.235.96.0/24) associated with OVH infrastructure. The IP resolves to Ahrefs corporate hosting with no active services detected. Despite legitimate corporate ownership, the subnet context warrants defensive attention due to elevated abuse density and DNS blacklist listings.

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PROFILE DATA

Risk Assessment

• Overall Risk Score: 40/100 (Moderate)
• Provider Score: 0
• Authority Score: 0
• Stability Score: 0
• Reputation Label: Moderate Risk

Network Attribution

• ASN: 16276 (OVH)
• Organization: Dmytro, Ahrefs Pte Ltd
• CIDR Block: 15.235.96.0/24
• Infrastructure Type: Cloud Compute / Hosting
• Connection Type: Firewalled / No Services

Geolocation

• Reported Country: Canada (CA)
• City: Singapore (geo-inconsistent)
• Distance Anomaly: 6,082 km from probe location
• RTT Violation: 30ms observed vs. 121.6ms minimum expected
• Status: Geographic data flagged as implausible

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THREAT INDICATORS

DNS Reputation

• DNS Blacklist Listings: 1 of 8 total lists
• Listed Count: 1
• Maximum Severity: High
• PTR Hostname: proxy-ca015-san53.ahrefs.net
• Forward Resolution: Confirmed (1 hostname)
• DNSSEC: Valid

Service Exposure

• Open Ports: None detected
• TLS Certificate: None
• HTTP Service: None
• Status: No active services

Campaign Correlation

• Known Campaigns: None
• Cert Matches: 0
• Correlated IPs: 0
• Campaign Likelihood: None

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SUBNET CONTEXT (15.235.96.0/24)

Abuse Metrics

• Abuse Density: 0.6992 (High)
• Classification: high_abuse
• Inherited Risk: 27
• Total Siblings: 256
• Active Siblings: 218
• Threat Siblings: 179

Risk Distribution Among Neighbors

• High Risk: 0
• Medium Risk: 87
• Low Risk: 13

Risk Assessment: The subnet exhibits elevated abuse density despite legitimate corporate ownership, suggesting compromised or misused resources within the customer block.

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OBSERVATION HISTORY

Recent signals (2026-06-20):

• Network Classification: Hosting provider (OVH), Cloud infrastructure
• Geolocation Signals: Multiple sources (CA/Singapore) with conflicting data
• Abuse Density: Consistent high-abuse classification
• DNSSEC: Valid
• Blacklist Status: Active listing with high severity

Temporal Analysis: No evidence of persistent malicious behavior. Ownership changes: 0. Threat observation count: 0.

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RELATIONSHIP GRAPH

Identified Relationships: 45

• Primary: Same network (OVH-CUST-281059694)
• Secondary: Limited to network-level associations
• No organizational, hostname, or certificate relationships detected beyond network scope

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RECOMMENDED ACTIONS

Immediate Defensive Posture:

1. Monitor for outbound connections from 15.235.96.53

2. Review firewall rules for any existing blocks on this IP

3. Validate DNS blacklist listings (1 high-severity list)

4. Assess if legitimate Ahrefs traffic should be permitted or if blocking is warranted

Firewall Recommendations:

• Consider blocking if inbound connections are not expected from Ahrefs infrastructure
• Log all traffic for forensic analysis
• Monitor for C2 patterns given subnet abuse density

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ANALYST NOTES: While the IP is legitimately associated with Ahrefs (SEO/traffic analysis provider), the high-abuse subnet context combined with DNS blacklist listings suggests potential compromise of neighboring resources or shared infrastructure misuse. SOC teams should weigh legitimate business use cases against subnet-level risk indicators when determining blocking policy.

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