# IP Intelligence Briefing: 54.39.0.83/32
## Executive Summary
54.39.0.83 is a moderate-risk (40/100) IP address assigned to OVH-CUST-281059683, a cloud compute infrastructure instance. The IP resolves to ahrefs.net and is geolocated to Beauharnois, Quebec, Canada (ASN 16276). While the individual IP shows no direct threat indicators, it resides within a subnet classified as high_abuse with 69.9% abuse density. No recommended blocking actions are currently warranted, but contextual subnet risk should be considered.
## Ownership and Infrastructure
| Attribute | Value |
|---|---|
| **Organization** | Dmytro, Ahrefs Pte Ltd |
| **ASN** | 16276 (OVH) |
| **CIDR Block** | 54.39.0.0/24 |
| **Infrastructure Type** | CloudCompute |
| **Classification** | Hosting (firewalled/no services) |
The IP resolves to hostnames: proxy-ca004-san83.ahrefs.net, indicating association with the Ahrefs SEO analytics service. DNSSEC is valid.
## Geographic Context
| Attribute | Value |
|---|---|
| **Country** | Canada (CA) |
| **Region** | Quebec (QC) |
| **City** | Beauharnois |
| **Geo Sources** | 2 |
## Threat Assessment
Individual IP Risk: 40/100 (Moderate Risk)
- Abuse Confidence Score: Not available
- Blacklist Count: 0
- Known Attacker: No
- Spam Source: No
- Tor Exit Node: No
- Campaign Matches: 0
- Threat Persistence: None observed
- Threat Observation Count: 0
Control Plane Signals:
- Operator Score: 0.2174 (Minimal)
- Route Stability: False
- DNSSEC Valid: Yes
- DNSBL Listed: 1 of 8 lists
## Neighborhood Analysis
The /24 subnet (54.39.0.0/24) shows elevated abuse characteristics:
| Metric | Value |
|---|---|
| **Total Siblings** | 256 |
| **Active Siblings** | 220 |
| **Threat Siblings** | 179 |
| **Abuse Density** | 0.6992 (High) |
| **Inherited Risk** | 27/100 |
Risk Distribution in Subnet:
- High: 0
- Medium: 100
- Low: 0
Neighbor IPs show consistent risk scores (~40), indicating systematic provisioning patterns rather than isolated incidents.
## Historical Signal Timeline
21 observations recorded with the following key signals:
1. 2026-06-23 17:49:44 โ DNS resolution to ahrefs.net (confidence: 0.80)
2. 2026-06-23 17:49:27 โ Operator score: Minimal (confidence: 0.30)
3. 2026-06-19 06:03:10 โ Operator score: Minimal (confidence: 0.60)
4. 2026-06-18 13:58:36 โ Subnet abuse density: high_abuse (confidence: 0.75)
No escalation in threat signals observed. IP maintains consistent benign resolution patterns.
## Relationship Graph
58 relationships identified, primarily:
- Same Network: OVH-CUST-281059683 (multiple entries)
- No unique hostname, organization, or certificate relationships beyond network-level associations
## Security Recommendations
Current Status: No active blocking required
Firewall Rules (if contextual subnet risk warrants action):
```
iptables -A INPUT -s 54.39.0.83 -j DROP
nft add rule inet filter input ip saddr 54.39.0.83 drop
nginx deny 54.39.0.83;
```
Assessment: This IP is part of a high-density OVH hosting subnet but shows no individual threat indicators. The hostname resolution to ahrefs.net suggests legitimate service usage. Monitor for behavioral changes if lateral movement or abuse patterns emerge from the subnet.
---
*Report generated: IPDebrief Intelligence Analysis Platform*
*Data Timestamp: Current*
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
๐ข Ownership & Registration
| Organization | Dmytro, Ahrefs Pte Ltd |
| ASN | AS16276 |
| Network Name | OVH-CUST-281059683 |
| CIDR Block | 54.39.0.0/24 |
| RIR | ARIN |
| Country | Singapore |
| Abuse Contact | โ |
๐ DNS Intelligence
| PTR | proxy-ca004-san83.ahrefs.net |
| Forward Confirmed | No โ PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca004-san83.ahrefs.net |
๐ DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Present |
โ๏ธ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Firewalled / No Services |
| Network Tier | Hosting โ Infrastructure provider without advanced routing |
๐ Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Closed Ports | 22, 25, 80, 443, 3389, 8080, 8443 (0 open / 7 scanned) | ||
| Server | โ |
| HTTP Title | โ |
๐ TLS Certificate
| SANs | None |
| Valid From | โ |
| Valid Until | โ |
๐ฏ Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 30% | 2 | 3 |
| routing | 13% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 15% | 2 | 2 |
| reputation | 22% | 1 | 2 |
| geolocation | 32% | 2 | 3 |
| Overall | 21% | 10 | 13 |
| Data Coherence | Mostly Consistent (80%) โ 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
๐ Observation Timeline ๐ Live
| First Seen | 2026-05-07 23:04:28 UTC |
| Last Seen | 2026-06-27 08:06:14 UTC |
| Profile Built | 2026-06-28 02:11:12 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 27 |
Full dossier details are available via our API.