51.195.183.0
INTELLIGENCE BRIEFING: 51.195.183.0
SUMMARY
IP 51.195.183.0 is a cloud infrastructure address belonging to OVH (ASN 16276), registered to Ahrefs Pte Ltd Dmytro. The address resolves to proxy-uk003-san0.ahrefs.net, indicating legitimate Ahrefs SEO analytics infrastructure. Risk assessment classified as Moderate Risk (40/100).
OWNERSHIP AND GEOLOCATION
- Organization: Ahrefs Pte Ltd Dmytro
- ASN: 16276 (OVH)
- Location: London, England, GB
- Network Type: Cloud Compute (OVH hosting provider)
- DNS PTR: proxy-uk003-san0.ahrefs.net
THREAT ASSESSMENT
The IP shows no active threat indicators. No known campaigns, no Tor exit node activity, and no known attacker flags. The IP is not listed as a spam source or known attacker. However, the address appears on 1 of 8 DNS blacklist checks. Operator score measured at 0.2174 (Minimal).
NEIGHBORHOOD CONTEXT
The /24 subnet (51.195.183.0/24) exhibits high abuse classification with 0.6836 abuse density. Analysis identified 195 active sibling IPs and 175 threat siblings within the subnet. Risk distribution across neighbors shows 99 medium-risk and 1 low-risk address. This contextualizes the IP within an actively used cloud infrastructure block.
NETWORK SERVICES
No open ports detected. The address is classified as "Firewalled / No Services," indicating no publicly accessible services. TLS certificates and HTTP banners are unavailable.
HISTORICAL OBSERVATIONS
24 observations recorded over the observation period. Recent signals from 2026-06-20 and 2026-06-15 show stable ownership with minimal changes. Neighborhood abuse density was flagged during 2026-06-15 observations. No persistent malicious behavior detected.
RELATIONSHIP GRAPH
The IP maintains 30 documented relationships, primarily same-network associations (OVH_282347339) and DNS associations to proxy-uk003-san0.ahrefs.net.
RECOMMENDATIONS
- Monitor for service activation on this address
- Contextualize activity within the high-abuse /24 subnet
- Consider network-level monitoring for the 51.195.183.0/24 block
- Verify Ahrefs authorization for any traffic originating from this address
CLASSIFICATION: Moderate Risk — Legitimate cloud infrastructure with contextual neighborhood risk factors.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Ahrefs Pte Ltd Dmytro |
| ASN | AS16276 |
| Network Name | — |
| CIDR Block | — |
| RIR | ARIN |
| Country | — |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | proxy-uk003-san0.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-uk003-san0.ahrefs.net |
🔐 DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Present |
☁️ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Firewalled / No Services |
| Network Tier | Hosting — Infrastructure provider without advanced routing |
🔌 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 | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 33% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 20% | 2 | 3 |
| reputation | 28% | 1 | 3 |
| geolocation | 33% | 2 | 3 |
| Overall | 24% | 10 | 16 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-20 05:45:03 UTC |
| Last Seen | 2026-06-28 11:16:47 UTC |
| Profile Built | 2026-06-29 05:20:03 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 25 |
Full dossier details are available via our API.