# IPDEBRIEF INTELLIGENCE BRIEFING
Target: 51.195.215.145/32
Classification: MODERATE RISK
Report Date: 2026-06-28
Analyst: IPDebrief Intelligence Team
---
## EXECUTIVE SUMMARY
The IP address 51.195.215.145 is associated with Ahrefs Pte Ltd Dmytro, hosted on OVH cloud infrastructure in London, GB. The IP presents a moderate risk profile (Score: 40) with no active threat indicators, though it resides within a high-abuse-density subnet. The address is currently firewalled with no open services detected.
---
## OWNERSHIP & GEOLOCATION
Organization: Ahrefs Pte Ltd Dmytro
ASN: 16276 (OVH)
Geolocation: London, England, GB
Infrastructure: CloudCompute (OVH Hosting)
CIDR Block: 51.195.0.0/16 (Origin ASN)
---
## NETWORK CLASSIFICATION
| Attribute | Value |
|---|---|
| Provider | OVH |
| Infrastructure Type | CloudCompute |
| Cloud Provider | Yes |
| CDN | No |
| VPN | No |
| Proxy | No |
| Tor | No |
| Mobile/Residential | No |
| Service Status | Firewalled / No Services |
DNS Resolution: proxy-uk009-san145.ahrefs.net (ahrefs.net)
---
## THREAT ASSESSMENT
Risk Score: 40 (Moderate)
Abuse Confidence: Not applicable
Blacklist Count: 0
DNSBL Listed: 1 of 8 feeds
Tor Exit Node: No
Known Attacker: No
Spam Source: No
Known Campaigns: None
Control Plane:
- Route Stability: Unstable
- DNSSEC Valid: Yes
- RPKI State: Unknown
- Operator Score: 0.2174 (Minimal)
---
## NEIGHBORHOOD ANALYSIS
Subnet: 51.195.215.0/24
Abuse Density: 0.8008 (HIGH ABUSE CLASSIFICATION)
Total Siblings: 256
Active Siblings: 239
Threat Siblings: 205
Inherited Risk: 32
The target IP resides within a subnet exhibiting high abuse density, with approximately 80% of active addresses showing threat indicators. This contextualizes the moderate risk profile within a broader high-risk network segment.
---
## OBSERVATION HISTORY (22 Total)
Recent observations show fluctuating risk parameters:
| Date | Abuse Density | Classification | Risk Score |
|---|---|---|---|
| 2026-06-28 | 0.3828 | Mixed | 15 |
| 2026-06-20 | 0.8008 | High Abuse | 32 |
The IP demonstrates temporal volatility with abuse density varying between 0.38 and 0.80 over the observation period. Network classification remains consistent as cloud infrastructure with no proxy/Tor/VPN characteristics.
---
## RELATIONSHIP GRAPH (41 Total)
Primary relationships identified:
- Network: OVH_282347345 (Multiple occurrences)
- No certificate or hostname associations detected
- No correlated malicious campaigns
---
## RECOMMENDED ACTIONS
Immediate: No specific blocking required; monitoring recommended
Firewall Rules: Standard cloud compute filtering
Threat Mitigation: Monitor for service activation; review outbound traffic patterns
Recommended Rule Example:
```bash
# Allow established connections, monitor new
iptables -A INPUT -p tcp --dport 80,443 -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A INPUT -p tcp --dport 80,443 -m state --state NEW -j LOG --log-prefix "IP-51.195.215.145:"
```
---
## ANALYST NOTES
The IP is associated with a legitimate SaaS provider (Ahrefs) but operates within a high-abuse-density OVH subnet. The moderate risk score is primarily driven by neighborhood context rather than direct threat indicators. SOC teams should monitor for service activation and correlate with known Ahrefs infrastructure. No immediate threat action warranted.
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-uk009-san145.ahrefs.net |
| Forward Confirmed | No โ PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-uk009-san145.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 | 33% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 20% | 2 | 3 |
| reputation | 28% | 1 | 3 |
| geolocation | 25% | 2 | 2 |
| Overall | 23% | 10 | 15 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
๐ Observation Timeline ๐ Live
| First Seen | 2026-05-20 11:46:57 UTC |
| Last Seen | 2026-06-28 11:57:31 UTC |
| Profile Built | 2026-06-29 06:00:59 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 25 |
Full dossier details are available via our API.