# IP INTELLIGENCE BRIEFING: 51.89.129.178/32
Date: 2026-06-27
Classification: LOW RISK
Risk Score: 25/100
---
## EXECUTIVE SUMMARY
IP address 51.89.129.178 is a low-risk host associated with Ahrefs Pte Ltd Dmytro, operating on OVH cloud infrastructure in London, England. The IP shows no current malicious indicators but resides within a /24 subnet exhibiting moderate abuse density (41.41%). No immediate blocking actions recommended.
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## OWNERSHIP AND INFRASTRUCTURE
- Organization: Ahrefs Pte Ltd Dmytro
- ASN: AS16276 (OVH SAS)
- Provider: OVH (CloudCompute)
- Location: London, ENG, GB
- Infrastructure Type: Cloud hosting environment
- Registered Domain: ahrefs.net
- PTR Record: proxy-uk008-san178.ahrefs.net
The IP is classified as hosting infrastructure with firewall protection enabled. No open ports or active services detected on the probe.
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## THREAT ASSESSMENT
Current Risk Profile: Low Risk
| Indicator | Status |
|---|---|
| Known Attacker | No |
| Spam Source | No |
| Tor Exit Node | No |
| Blacklist Count | 0 |
| Active Threats | None |
No active threat indicators detected. The IP does not appear in known threat feeds or campaigns.
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## SUBNET CONTEXT
/24 Neighborhood Analysis (51.89.129.0/24):
- Abuse Density: 41.41%
- Classification: Mixed
- Total Siblings: 256
- Active Siblings: 207
- Threat Siblings: 106
- Risk Distribution: 0 High / 74 Medium / 26 Low
The parent subnet shows elevated abuse activity consistent with shared cloud hosting infrastructure. The target IP remains clean despite neighborhood noise.
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## OBSERVATION HISTORY
Total Signals Observed: 25
Observation Period: Recent activity through June 2026
Key historical signals indicate:
- Stable geolocation attribution to UK
- Consistent OVH network association
- No escalation in threat severity
- Mixed subnet classification persists across observations
No evidence of behavioral changes or emerging threat patterns.
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## RELATIONSHIP ANALYSIS
Total Relationships: 81
Primary Associations:
- Same Network: OVH_282347344 (repeated)
- Related infrastructure within OVH cloud ecosystem
Relationship graph indicates standard cloud hosting network patterns with no anomalous interconnections.
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## RECOMMENDATIONS
Action Required: None
Firewall Rules: Not recommended
Risk Level: Acceptable for standard traffic
The IP demonstrates legitimate cloud hosting characteristics with no malicious behavior. Routine monitoring is appropriate given the subnet's mixed abuse classification.
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## ANALYST NOTES
This IP belongs to Ahrefs' proxy infrastructure in the UK. The hostname pattern (proxy-uk008-san178.ahrefs.net) indicates it may serve as a proxy or caching endpoint. While the specific IP is clean, SOC teams should consider the elevated subnet abuse density when evaluating traffic patterns from this /24 block. No immediate threat response actions 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-uk008-san178.ahrefs.net |
| Forward Confirmed | No โ PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-uk008-san178.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 | 25% | 2 | 4 |
| routing | 8% | 1 | 1 |
| services | 20% | 2 | 3 |
| ownership | 17% | 2 | 3 |
| reputation | 27% | 1 | 3 |
| geolocation | 35% | 2 | 3 |
| Overall | 22% | 10 | 17 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
๐ Observation Timeline ๐ Live
| First Seen | 2026-05-10 10:13:57 UTC |
| Last Seen | 2026-06-27 17:35:58 UTC |
| Profile Built | 2026-06-28 17:40:31 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 29 |
Full dossier details are available via our API.