# IP Intelligence Briefing: 51.195.215.196/32
## Executive Summary
IP address 51.195.215.196 was identified as a moderate-risk (score 40) cloud infrastructure endpoint hosted by OVH in London, United Kingdom. The IP operates within a high-abuse density subnet (51.195.215.0/24) with 69.53% abuse density and 178 threat-sibling IPs out of 256 total siblings. The address resolves to hostnames associated with Ahrefs Pte Ltd (proxy-uk009-san196.ahrefs.net) and is classified as cloud computing infrastructure with no open services detected.
## Profile Assessment
Network Classification: Cloud compute infrastructure operated by OVH (ASN 16276), registered to Ahrefs Pte Ltd Dmytro. Geolocation data indicates London, England (GB), with multiple geolocation sources confirming consensus.
Risk Indicators:
- Overall Risk Score: 40/100 (Moderate Risk)
- Provider Score: 0
- Authority Score: 0
- DNSBL Listed: 1 out of 8 total lists
- Tor/VPN/Proxy: Negative indicators (not identified as Tor exit node, VPN, proxy, or CDN)
Network Role: The IP is classified as hosting infrastructure with firewalled/no services status. No open ports were detected during scanning operations.
## Threat Intelligence
Neighborhood Analysis: The /24 subnet (51.195.215.0/24) exhibits high abuse classification with 69.53% abuse density. Of 256 total sibling IPs, 199 were actively observed, with 178 classified as threat siblings. Risk distribution across the subnet showed 98 medium-risk neighbors and 2 low-risk neighbors, with no high-risk neighbors identified in the analyzed sample.
Historical Observations: Analysis of 30 historical observations revealed consistent routing patterns through OVH infrastructure with route stability maintained. Geolocation validation showed plausible location claims (London coordinates) with minimum possible RTT of 9.47ms. Ownership and classification signals remained stable across the observation period.
Infrastructure Relationships: The IP maintains 61 relationship records, predominantly identifying same-network associations with OVH network OVH_282347345, confirming the IP's position within the provider's infrastructure.
## Technical Details
- ASN: 16276
- RIR: ARIN
- BGP Prefix: 51.195.0.0/16
- Route Stability: Stable (0 route changes in 30 days)
- DNS: proxy-uk009-san196.ahrefs.net
- Email Auth: No SPF or DMARC records detected
- RTT Metrics: Average 91.4ms, maximum 96ms, minimum 89ms from probe location
## Actionable Intelligence
Recommended Actions:
- Monitor for lateral movement attempts from threat-sibling IPs within the 51.195.215.0/24 subnet
- Implement rate limiting for connections to this subnet given the high-abuse classification
- Review DNSBL listing context to determine if the single blacklist hit is legitimate
- Consider blocking at perimeter if threat indicators emerge from sibling IPs
- No immediate blocking recommended based on moderate risk score and lack of active threat indicators
Firewall Rule Consideration: This IP shows no active services and is properly firewalled. Blocking may be unnecessary unless specific threat intelligence correlates this address with malicious activity.
## Conclusion
IP 51.195.215.196 represents a cloud-hosted infrastructure endpoint with moderate risk characteristics. While the subnet exhibits elevated abuse density, this single IP shows no active malicious indicators and operates within expected hosting parameters. SOC teams should monitor for changes in behavior patterns but no immediate defensive action is required absent additional threat intelligence.
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 | 51.195.0.0/16 |
| RIR | ARIN |
| Country | โ |
| Abuse Contact | Available via RDAP |
๐ DNS Intelligence
| PTR | proxy-uk009-san196.ahrefs.net |
| Forward Confirmed | No โ PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-uk009-san196.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 | Tier 3 โ Basic operator with some routing infrastructure |
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 | 31% | 2 | 4 |
| routing | 27% | 2 | 3 |
| services | 20% | 2 | 3 |
| ownership | 24% | 3 | 4 |
| reputation | 28% | 1 | 3 |
| geolocation | 33% | 2 | 3 |
| Overall | 27% | 12 | 20 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
๐ Observation Timeline ๐ Live
| First Seen | 2026-05-14 01:10:14 UTC |
| Last Seen | 2026-06-28 00:11:13 UTC |
| Profile Built | 2026-06-28 18:17:28 UTC |
| Data Freshness | Live |
| Signal Types | 28 |
| Total Observations | 33 |
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