15.235.98.82📋 Copy

# IP INTELLIGENCE BRIEFING: 15.235.98.82/32

Date: 2026-06-20

Classification: MODERATE RISK

Risk Score: 40/100

## Executive Summary

IP address 15.235.98.82 is a cloud-hosted infrastructure endpoint belonging to OVH (ASN 16276) under the network prefix OVH-CUST-281059698. While the IP itself shows moderate risk indicators, the entire /24 subnet demonstrates elevated abuse density (0.7578) with 194 threat-sibling IPs identified. Geographic validation discrepancies and DNSBL listings warrant monitoring, though no active malicious indicators or persistent campaigns were observed.

## Ownership and Infrastructure

• Provider: OVH (CloudCompute)
• Organization: Dmytro, Ahrefs Pte Ltd
• CIDR Block: 15.235.98.0/24
• Infrastructure Type: Cloud hosting environment
• Network Classification: Hosted infrastructure (isHosting=true)

## Geolocation Analysis

• Claimed Location: Singapore (geoSourceCount: 1)
• Validation Status: GEOGRAPHIC INCONSISTENCY DETECTED
• Observed Distance: 6,082 km
• Minimum Possible RTT: 121.6 ms
• Actual RTT: 23 ms
• Conclusion: Geographic data validation failed (geoPlausible=false). The IP appears to be claimed from Canada (CA) in one signal while geolocation data points to Singapore with implausible RTT metrics, suggesting potential misconfiguration or data pollution.

## DNS and Host Resolution

• PTR Hostname: proxy-ca019-san82.ahrefs.net
• Associated Domain: ahrefs.net
• Forward Resolution: 1 hostname (proxy-ca019-san82.ahrefs.net)
• Email Authentication: SPF and DMARC records not configured
• HTTP Services: No open ports detected; service banner unavailable (firewalled/no services)

## Threat Indicators

• Known Attacker: No
• Tor Exit Node: No
• Spam Source: No
• Blacklist Count: 0
• DNSBL Listed: 1/8 lists
• Active Threat Indicators: None observed
• Campaign Correlation: None

## Neighborhood Risk Assessment

The parent subnet 15.235.98.0/24 demonstrates significant abuse activity:

• Subnet Abuse Density: 0.7578 (HIGH)
• Total Siblings: 256
• Active Siblings: 247 (96.5% active)
• Threat Siblings: 194 (75.8% threat rate)
• Inherited Risk Score: 30
• Risk Distribution: 100 medium-risk IPs, 0 high-risk, 0 low-risk

This subnet-level risk profile indicates systemic abuse patterns requiring contextual awareness when evaluating traffic from 15.235.98.0/24.

## Observation History

Analysis of 20 recent observations (2026-06-20) reveals:

• Recent Signals: Domain resolution (ahrefs.net), subnet classification (high_abuse), cloud infrastructure confirmation
• Threat Persistence: 0 days; no persistently malicious activity detected
• Ownership Changes: 0 (stable ownership)
• Trend: No escalation in risk profile observed

## Recommended Security Actions

Based on risk score 40 and neighborhood context, the following firewall rules are recommended:

## Intelligence Narrative

This IP address represents a cloud-hosted endpoint within a high-abuse-density subnet. The combination of DNSBL listing, geographic inconsistencies, and neighborhood risk metrics suggests elevated probability of abuse involvement. However, the IP itself lacks direct threat indicators (no known attacker status, no Tor exit node, no active campaigns). The absence of open services indicates the IP is likely firewalled or used for backend infrastructure rather than direct user-facing services.

SOC Analyst Guidance: Monitor inbound traffic from this IP for suspicious patterns. Consider implementing block rules at the perimeter while maintaining awareness of the broader subnet risk context. Correlate with other signals from 15.235.98.0/24 to identify coordinated activity patterns.

---

*Report generated using IPDebrief intelligence platform. All data sourced from authorized defensive security analysis.*

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