15.235.98.255
IP Intelligence Briefing: 15.235.98.255
*Generated via IPDebrief tools: profile, history, relationships, and neighborhood analysis*
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**1. Core Profile**
- Risk Score: 50 (Moderate Risk)
- Ownership: Registered to Ahrefs Pte Ltd (OVH, ASN 16276).
- Geolocation: Singapore (CA), but geo-validation flags inconsistencies (RTT discrepancies suggest data center infrastructure).
- Network Role: CloudCompute instance (OVH-hosted, no residential/mobile signals).
- Threat Indicators: No malicious activity detected. DNSBL listings (2/8 total) suggest limited abuse risk.
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**2. Historical Observations**
- Abuse Density: Subnet (15.235.98.0/24) shows 0.38–0.54 abuse density over 30 days.
- DNSBL Listings: 1/8 total lists (e.g., Spamhaus, Project Honey Pot).
- Network Stability: Stable routing (no recent route changes).
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**3. Relationships & Network Context**
- Subnet: 15.235.98.0/24 (OVH-CUST-281059698).
- Neighbors:
- 255 total IPs, 182 active.
- 99 threat siblings (high/medium risk).
- Mixed risk distribution: 40 medium-risk, 60 low-risk neighbors.
- Linked Entities:
- DNS: `proxy-ca019-san255.ahrefs.net` (ahrefs.net domain).
- BGP: Part of OVH’s 15.235.0.0/17 prefix.
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**4. Actionable Insights**
- Monitoring:
- Track DNSBL status and subnet abuse density.
- Monitor for unexpected port openings or TLS certificate changes.
- Mitigation:
- Consider firewall rules to restrict access to this IP (e.g., iptables/nftables).
- Verify cloud instance security posture (e.g., Ahrefs’ compliance practices).
- Context:
- The IP is likely a legitimate cloud server but resides in a subnet with mixed risk. Prioritize investigation if unusual traffic patterns emerge.
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Next Steps: Cross-reference with internal threat intel, validate DNS records, and monitor for lateral movement indicators.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Dmytro, Ahrefs Pte Ltd |
| ASN | AS16276 |
| Network Name | OVH-CUST-281059698 |
| CIDR Block | 15.235.98.0/24 |
| RIR | ARIN |
| Country | Singapore |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | proxy-ca019-san255.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca019-san255.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 | 29% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 31% | 1 | 3 |
| geolocation | 37% | 2 | 3 |
| Overall | 23% | 10 | 15 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-09 11:33:36 UTC |
| Last Seen | 2026-06-27 15:20:33 UTC |
| Profile Built | 2026-06-28 09:25:44 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 28 |
Full dossier details are available via our API.