168.100.149.172
IP Intelligence Briefing: 168.100.149.172
Date: 2026-06-06
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**1. Core Profile**
- Risk Score: 25 (Low Risk)
- Ownership:
- AS140577: Ahrefs Pte Ltd (Singapore)
- Subnet: 168.100.144.0/20
- Geolocation: Registered to Singapore (SG) but observed in Ashburn, Virginia (US).
- Threat Indicators: No malicious activity detected (no blacklists, campaigns, or known attackers).
- Network Role: Firewalled infrastructure (no open ports/services).
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**2. Observation History**
- Recent Activity:
- Confirmed geolocation in Ashburn (US) and Singapore (SG) via multiple sources.
- Stable network provider (AS140577) with no ownership changes.
- Trends:
- No significant changes in risk signals over the past 30 days.
- Low threat persistence (0 threat observations).
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**3. Relationships**
- DNS Associations:
- Linked to `proxy-us003-san22.ahrefs.net` (likely internal infrastructure).
- Network:
- Subnet `AHREFS-US` (AS140577) with no direct malicious ties.
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**4. Neighborhood Analysis**
- Subnet: 168.100.149.172/24
- Abuse Density: 0.1667 (low-risk subnet).
- Neighbor Risks:
- 21 IPs with medium risk, 79 with low risk.
- No high-risk neighbors detected.
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**5. Actionable Insights**
- No Immediate Threat: The IP is part of Ahrefs' legitimate infrastructure with no malicious indicators.
- Geolocation Discrepancy: Mixed geolocation data (SG/US) may require deeper investigation into routing or data source accuracy.
- Monitor Subnet: While the subnet is mostly clean, 21 neighbors have medium risk; consider closer scrutiny of adjacent IPs.
Recommendation: Maintain current security policies. No firewall rules or blocks recommended for this IP.
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*Generated using IPDebrief threat intelligence tools.*
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Ahrefs Pte Ltd administrator |
| ASN | AS140577 |
| Network Name | AHREFS-US |
| CIDR Block | 168.100.144.0/20 |
| RIR | ARIN |
| Country | US |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | proxy-us003-san22.ahrefs.net |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | proxy-us003-san22.ahrefs.net |
🔐 DNS Hygiene
| Hygiene Score | 60% (Good) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Verified |
| DNSSEC | Valid |
| CAA | Present |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Firewalled / No Services |
| Network Tier | Tier 3 — Basic operator with some routing infrastructure |
🔌 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 | 19% | 2 | 2 |
| routing | 25% | 1 | 1 |
| services | 13% | 1 | 1 |
| ownership | 27% | 2 | 3 |
| reputation | 13% | 1 | 2 |
| geolocation | 23% | 2 | 2 |
| Overall | 20% | 9 | 11 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Moderate (55%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-12 15:46:58 UTC |
| Last Seen | 2026-06-21 12:22:32 UTC |
| Profile Built | 2026-06-06 12:30:19 UTC |
| Data Freshness | Live |
| Signal Types | 20 |
| Total Observations | 21 |
Full dossier details are available via our API.