# IP Intelligence Briefing: 51.195.244.54/32
## Executive Summary
IP 51.195.244.54 is a cloud infrastructure endpoint associated with Ahrefs Pte Ltd Dmytro, operated through OVH (ASN 16276). The IP resolves to a proxy hostname (proxy-uk000-san54.ahrefs.net) within the ahrefs.net domain. Risk assessment indicates Moderate Risk (Score: 40) with no active threat indicators. The IP operates from London, England, and maintains a firewalled posture with no open services detected.
## Infrastructure Profile
- Organization: Ahrefs Pte Ltd Dmytro
- ASN: 16276 (OVH)
- Location: London, England, GB
- Classification: Hosting infrastructure (firewalled/no services)
- Network Role: Provider infrastructure
- Geolocation Confidence: True (750 km accuracy radius)
## Threat Assessment
- Overall Risk: Moderate (Score: 40)
- Known Attacker: No
- Spam Source: No
- Tor Exit Node: No
- Blacklist Status: Not listed (0 blacklists)
- Campaign Association: None detected
- Abuse Confidence: Not scored
## Control Plane Analysis
- DNSBL Status: Listed on 1 of 8 total lists
- Operator Score: 0.2174 (Minimal)
- BGP Prefix: 51.195.0.0/16
- Route Stability: False
- DNSSEC Valid: True
- CAA Records: Present
## Neighborhood Context
The /24 subnet (51.195.244.0/24) exhibits elevated abuse characteristics:
- Abuse Density: 0.8594 (high_abuse classification)
- Total Siblings: 256
- Active Siblings: 228
- Threat Siblings: 220
- Risk Distribution: 0 high-risk, 17 medium-risk, 83 low-risk
The neighborhood risk score (34) is inherited from subnet-level abuse patterns.
## Relationship Graph
38 relationships identified, primarily same-network associations with OVH infrastructure (OVH_282347336). No cross-network or organizational relationships detected beyond provider infrastructure.
## Historical Observations
23 signals recorded across the observation window:
- Consistent DNS resolution to ahrefs.net infrastructure
- Persistent subnet abuse density (0.8594)
- No ownership changes detected
- Threat persistence days: 0 (not persistently malicious)
- Recent activity includes DNS CAA record validation
## Security Actions
No specific firewall rules or blocking actions recommended based on current risk profile. The IP represents legitimate infrastructure with moderate risk scoring. Monitoring should focus on subnet-level abuse patterns rather than individual IP behavior.
## Analyst Notes
This IP belongs to Ahrefs, a legitimate SEO and web analytics provider. While the subnet shows elevated abuse density (220 threat siblings), the specific IP maintains a clean threat profile. SOC teams should treat this as legitimate infrastructure but remain aware of neighborhood-level risk. The single DNSBL listing warrants periodic review but does not indicate active malicious use.
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*Briefing generated from IPDebrief intelligence platform. Data current as of observation timestamp.*
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
๐ข Ownership & Registration
| Organization | Ahrefs Pte Ltd Dmytro |
| ASN | AS16276 |
| Network Name | โ |
| CIDR Block | โ |
| RIR | ARIN |
| Country | โ |
| Abuse Contact | Available via RDAP |
๐ DNS Intelligence
| PTR | proxy-uk000-san54.ahrefs.net |
| Forward Confirmed | No โ PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-uk000-san54.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 | 4 |
| routing | 8% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 24% | 2 | 3 |
| reputation | 28% | 1 | 3 |
| geolocation | 35% | 2 | 3 |
| Overall | 23% | 10 | 16 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
๐ Observation Timeline ๐ Live
| First Seen | 2026-05-26 21:00:14 UTC |
| Last Seen | 2026-06-29 03:31:58 UTC |
| Profile Built | 2026-06-29 03:35:28 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 23 |
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