54.39.203.221
IP Intelligence Briefing: 54.39.203.221
Date: 2026-06-10
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**1. Core Profile**
- Risk Score: Moderate (50/100)
- Provider: OVH (ASN 16276)
- Organization: Ahrefs Pte Ltd (hosting/cloud infrastructure)
- Geolocation: Registered to Canada (Quebec), but DNS resolves to Singapore (potential discrepancy).
- Threat Indicators: No malicious activity detected (no abuse confidence scores, no blacklists, no campaign associations).
- Network Role: Cloud compute instance (OVH hosting), no residential/mobile carrier.
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**2. Observation History**
- Recent Activity (June 2026):
- Listed in 1 threat feed (confidence 0.85), but no specific malicious indicators.
- DNS records for `ahrefs.net` (CAA records verified).
- Ownership stability: No changes in 30 days.
- Operator risk score: "Minimal" (0.2174).
- Long-Term Trends: Consistent low-risk behavior with no persistent malicious patterns.
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**3. Network Relationships**
- Linked Entities:
- Same network: `OVH-CUST-281059687` (54.39.203.0/24).
- DNS associations: `proxy-ca008-san221.ahrefs.net` (likely internal Ahrefs infrastructure).
- Subnet Context:
- Subnet `54.39.203.0/24` has 249 IPs (139 active).
- Abuse density: 47.8% (moderate risk).
- 119 IPs in subnet flagged as risky (potential lateral movement or shared hosting risks).
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**4. Threat Assessment**
- No Direct Threat: No indicators of spam, attacks, or malicious campaigns.
- Indirect Risks:
- Subnet contains mixed-risk IPs; monitor for abnormal traffic patterns.
- Ahrefs is a legitimate entity, but its infrastructure could be compromised (e.g., misconfigured servers).
- Geolocation Anomaly: IP registered to Canada but resolves to Singapore—verify DNS accuracy or potential spoofing.
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**5. SOC Recommendations**
- Monitor Subnet: Track activity in `54.39.203.0/24` for unusual traffic (e.g., outbound C2, DDoS).
- Validate DNS: Confirm `proxy-ca008-san221.ahrefs.net` is legitimate and not used for phishing.
- Check for Misconfigurations: Ensure Ahrefs' cloud instances are secured (e.g., WAF, firewall rules).
- Geolocation Verification: Investigate the Singapore-Canada discrepancy to rule out spoofing or data errors.
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Conclusion: 54.39.203.221 is a low-risk cloud instance associated with Ahrefs, but its subnet contains moderate-risk peers. No immediate action is required, but continuous monitoring is advised.
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-281059687 |
| CIDR Block | 54.39.203.0/24 |
| RIR | ARIN |
| Country | Singapore |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | proxy-ca008-san221.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca008-san221.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 | 40% | 2 | 3 |
| routing | 8% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 23% | 1 | 2 |
| geolocation | 27% | 2 | 3 |
| Overall | 22% | 10 | 13 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-25 12:42:53 UTC |
| Last Seen | 2026-06-29 01:47:49 UTC |
| Profile Built | 2026-06-29 07:50:57 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 25 |
Full dossier details are available via our API.