54.39.203.6📋 Copy

# IPDebrief Intelligence Briefing: 54.39.203.6

## Executive Summary

IP 54.39.203.6 is a Moderate Risk (40) cloud hosting infrastructure IP assigned to OVH's Ahrefs Pte Ltd customer network. Located in Beaucharnois, Quebec, Canada, the IP represents OVH-hosted infrastructure with DNS resolution to aframes.net. The /24 subnet exhibits elevated abuse density (0.6523) with 167 threat-sibling IPs among 217 active addresses.

## Ownership and Network Classification

• ASN: 16276 (OVH SAS)
• Organization: Dmytro, Ahrefs Pte Ltd
• Network: OVH-CUST-281059687 (54.39.203.0/24)
• Infrastructure Type: CloudCompute / Hosting
• Provider: OVH (cloud hosting provider)

## Geolocation

• Country: Canada (CA)
• Region: Quebec (QC)
• City: Beaucharnois
• Accuracy Radius: 3000 km

## DNS and Service Analysis

• PTR Hostname: proxy-ca008-san6.ahrefs.net
• Forward Resolution: ahrefs.net
• Forward Hostnames: proxy-ca008-san6.ahrefs.net
• Forward Resolution Count: 1
• Email Authentication: No SPF, No DMARC records detected
• Open Ports/Services: None detected (Firewalled / No Services)

## Threat Indicators

• Abuse Confidence Score: Not available
• Blacklist Count: 0
• Known Attacker: No
• Tor Exit Node: No
• Spam Source: No
• DNSBL Listed: 1 of 8 total lists checked
• Operator Score: 0.2174 (Minimal)
• Threat Feeds: No active correlations

## Neighborhood Analysis (54.39.203.0/24)

• Total Siblings: 256 IPs
• Active Siblings: 217
• Threat Siblings: 167
• Abuse Density: 0.6523 (High Abuse Classification)
• Inherited Risk: 26
• Risk Distribution: 100 medium-risk IPs, 0 high-risk IPs
• Classification: High Abuse

The subnet demonstrates concentrated threat activity with approximately 77% of active neighbors classified as threat siblings.

## Observation History

• Total Observations: 23
• Recent Activity: DNS and operator signals observed June 18-23, 2026
• Threat Persistence Days: 0
• Ownership Changes: 0
• Last Significant Signal: DNS resolution to ahrefs.net (June 23, 2026)

## Control Plane Assessment

• Origin ASN: 16276
• BGP Prefix: 54.39.0.0/16
• Route Stability: Unstable
• RPKI State: Not available
• DNSSEC Valid: Yes
• CAA Records: Present

## Recommended Security Actions

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

Firewall Rules:

• iptables: `iptables -A INPUT -s 54.39.203.6 -j DROP`
• nftables: `nft add rule inet filter input ip saddr 54.39.203.6 drop`
• nginx: `deny 54.39.203.6;`
• pfSense: `54.39.203.6/32`

Cloud/WAF Integration:

• Cloudflare WAF: Block with filter `ip.src eq 54.39.203.6`
• AWS WAF: Block address `54.39.203.6/32`

## Risk Assessment

This IP represents cloud hosting infrastructure with elevated neighborhood abuse density. While the IP itself shows no direct malicious indicators, the high-abuse subnet classification warrants monitoring. The association with ahrefs.net suggests potential use for SEO-related infrastructure, but the elevated sibling threat count indicates potential abuse within the network block.

Recommendation: Monitor traffic patterns and consider blocking given the high-abuse neighborhood context. Combine with other threat intelligence signals before implementing blocking measures.

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