15.235.98.59📋 Copy

## INTELLIGENCE BRIEFING: 15.235.98.59/32

Classification: MODERATE RISK

Report Date: Current

Source: IPDebrief Threat Intelligence Platform

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EXECUTIVE SUMMARY

IP 15.235.98.59 is a cloud-hosted address under OVH infrastructure (ASN 16276) associated with Ahrefs domain (ahrefs.net). While the individual IP shows moderate risk (score 40), it resides within a high-abuse subnet (15.235.98.0/24) with 63.28% abuse density and 162 threat-identified siblings. The address is currently firewalled with no open services.

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OWNERSHIP & INFRASTRUCTURE

• Provider: OVH (OVH-CUST-281059698)
• Organization: Dmytro, Ahrefs Pte Ltd
• Infrastructure Type: CloudCompute / Hosting
• ASN: 16276
• CIDR Block: 15.235.98.0/24
• Service Status: Firewalled / No Services Detected

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GEOSPATIAL DATA

• Consensus Location: Singapore
• Country Code: CA
• Accuracy Radius: 3000km
• Note: Geographic inconsistency detected (country code CA vs city Singapore)

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THREAT INDICATORS

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DNS & RESOLUTION

• PTR Hostname: proxy-ca019-san59.ahrefs.net
• Associated Domain: ahrefs.net
• Forward Resolution: Unconfirmed
• Email Authentication: SPF/DMARC Not Configured
• DNSSEC: Valid
• CAA Records: Present

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SUBNET ANALYSIS (15.235.98.0/24)

• Abuse Density: 0.6328 (HIGH)
• Classification: high_abuse
• Total Subnet IPs: 256
• Active Siblings: 234
• Threat-Identified Siblings: 162
• Inherited Risk Score: 25
• Risk Distribution: 100 medium, 0 high/low

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OBSERVATION HISTORY (21 Signals)

• Latest Signal (2026-06-21): Cloud infrastructure classification
• Previous Signal (2026-06-16): High abuse subnet classification
• Threat Persistence: 0 days
• Threat Observation Count: 1
• Recent Trend: Stable cloud infrastructure profile with no escalation

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CONTROL PLANE

• BGP Prefix: 15.235.0.0/17
• Route Stability: Unstable (changes detected)
• DNSBL Listed: 1 of 8 total lists
• Operator Score: 0.2174 (Minimal)
• RPKI/IRR: Inconsistent

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RELATIONSHIP MAPPING

• Primary Network: OVH-CUST-281059698 (multiple associations)
• DNS Associations: proxy-ca019-san59.ahrefs.net (primary hostname)
• No External Threat Correlations: Zero correlated IPs, certificates, or campaign matches

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SOC RECOMMENDATIONS

Monitoring Actions:

1. Baseline Current Behavior: IP shows no active services; establish baseline for network activity

2. Monitor Subnet 15.235.98.0/24: High abuse density requires heightened awareness of adjacent IPs

3. Watch DNS Activity: Monitor proxy-ca019-san59.ahrefs.net for anomalous traffic patterns

Firewall/Blocking Decision:

• Immediate Block: Not recommended at this time (moderate risk, no active threats)
• Rate Limiting: Consider for inbound connections if observed
• Observation Required: Monitor for service activation or threat indicator emergence

Priority Level: MEDIUM

Threat Classification: Infrastructure-Associated (Cloud/Hosting)

Action: Monitor, No Immediate Block

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