## IP INTELLIGENCE BRIEFING: 51.68.247.209
Classification: Moderate Risk (Score: 40) | Date: 2026-06-14
EXECUTIVE SUMMARY
IP 51.68.247.209 is a cloud infrastructure address hosted on OVH (ASN 16276) in France. The IP resolves to the ahrefs.net domain (proxy-fr003-san209.ahrefs.net), indicating legitimate Ahrefs infrastructure. However, the /24 subnet (51.68.247.0/24) exhibits elevated abuse density (0.8438) with high_abuse classification, suggesting the IP should be monitored despite its association with a legitimate service.
OWNERSHIP & GEOLOCATION
- Organization: Ahrefs Pte Ltd Dmytro
- ASN: 16276 (OVH SAS)
- Country: France (FR)
- City/Region: Not disclosed
- Infrastructure Type: CloudCompute / Hosting
- Network Role: Firewalled / No Services Detected
THREAT ASSESSMENT
| Metric | Value | Assessment |
|---|---|---|
| Risk Score | 40 | Moderate |
| Blacklist Count | 0 | Clean |
| Known Campaigns | 0 | None |
| Tor/Proxy | False | Not a Tor exit or known proxy |
| Tor Exit IP | False | Not a Tor exit node |
| Abuse Confidence | Not scored | No direct abuse indicators |
Key Observations:
- No direct threat indicators detected
- No known malicious campaigns associated
- No open ports or active services detected
- DNS resolution confirms legitimate ahrefs.net infrastructure
NEIGHBORHOOD ANALYSIS
Subnet: 51.68.247.0/24
- Total Siblings: 32 IPs
- Active Siblings: 13 IPs
- Threat Siblings: 27 IPs
- Abuse Density: 0.8438 (Elevated)
- Classification: High Abuse
Risk Distribution in /24:
- High Risk: 0 IPs
- Medium Risk: 31 IPs (All neighbors scored 40-50)
- Low Risk: 0 IPs
The subnet demonstrates concentrated medium-risk activity. While 51.68.247.209 itself has no direct threat indicators, the subnet-level abuse density warrants contextual monitoring.
SIGNAL HISTORY
- Observations: 23 signals recorded
- Most Recent: 2026-06-14
- Ownership Changes: 0 (Stable)
- Threat Persistence: 0 days
- Signal Types: Network classification, geolocation, operator scoring, DNS resolution
The IP demonstrates signal stability with no ownership changes and consistent network classification.
RELATIONSHIP MAPPING
- Total Relationships: 48
- Primary Association: OVH_282114228 (Same Network)
- Related Entities: Primarily network-level associations within OVH infrastructure
RECOMMENDED ACTIONS
Immediate Mitigation (Score 40 triggers action):
- Block traffic at perimeter firewall
- Recommended firewall rules provided for iptables, nftables, nginx, pfSense, Cloudflare WAF, and AWS WAF
Rationale: While the IP resolves to legitimate Ahrefs infrastructure, the high-abuse subnet context and automated risk scoring warrant blocking.
SOC Analyst Notes:
1. This IP is associated with legitimate Ahrefs web infrastructure (ahrefs.net)
2. The /24 subnet shows elevated abuse densityβmonitor other addresses in range
3. No direct malicious activity detected at this IP
4. If traffic is observed, verify against known Ahrefs service patterns
5. Consider allowing if traffic matches expected Ahrefs behavior patterns
6. Block if traffic exhibits suspicious patterns despite IP reputation
Status: Monitor | Risk Level: Moderate | Action: Block (default) / Allow with monitoring
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*Generated: 2026-06-14 | Source: IPDebrief Intelligence Platform*
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
π’ Ownership & Registration
| Organization | Ahrefs Pte Ltd Dmytro |
| ASN | AS16276 |
| Network Name | β |
| CIDR Block | β |
| RIR | ARIN |
| Country | β |
| Abuse Contact | Available via RDAP |
π DNS Intelligence
| PTR | proxy-fr003-san209.ahrefs.net |
| Forward Confirmed | No β PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-fr003-san209.ahrefs.net |
π DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Present |
βοΈ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Firewalled / No Services |
| Network Tier | Hosting β Infrastructure provider without advanced routing |
π 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 | β |
| HTTP Title | β |
π TLS Certificate
| SANs | None |
| Valid From | β |
| Valid Until | β |
π― Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 36% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 24% | 2 | 3 |
| reputation | 31% | 1 | 3 |
| geolocation | 33% | 2 | 3 |
| Overall | 25% | 10 | 16 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
π Observation Timeline π Live
| First Seen | 2026-05-14 07:14:53 UTC |
| Last Seen | 2026-06-28 00:34:03 UTC |
| Profile Built | 2026-06-28 18:39:21 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 27 |
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