202.8.42.151
IP Intelligence Briefing: 202.8.42.151
Date: 2026-06-09
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**1. Core Profile**
- Risk Score: 25 (Low Risk)
- Ownership: Ahrefs Pte Ltd (ASN 140577)
- Geolocation: US, Virginia, Ashburn (geoplacement inferred with 3,750 km accuracy radius).
- Network Role: No active services or open ports detected.
- Threat Indicators: No direct malicious activity observed; no known attackers, spam, or Tor exit nodes.
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**2. Observation History**
- 17 Signals Recorded:
- Threat Listings: 1 entry flagged in threat feeds (high severity, but details truncated).
- Network Context: Linked to ASN 140577 (Ahrefs) and Singapore-based entity with potential threats.
- Geolocation: Inferred as US-based with moderate confidence.
- Operator Score: 0.3478 (Basic infrastructure).
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**3. Relationships**
- DNS Associations:
- Strong ties to `sardine663.ahrefs.net` (likely Ahrefs crawler infrastructure).
- Network Affiliation:
- Subnet `AHREFS-CRAWLER-B-USA` (202.8.42.0/23).
- No CDN, cloud, or mobile carrier associations.
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**4. Neighborhood Analysis**
- Subnet: 202.8.42.0/24
- Abuse Density: 12% (mostly clean, but 13 threat siblings out of 108 total IPs).
- High-Risk Neighbors: 30 IPs flagged as medium/high risk.
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**5. Key Findings & Recommendations**
- Ownership Context: Likely part of Ahrefs' web crawling infrastructure.
- Risk Assessment: Low-risk IP with no direct malicious activity, but subnet contains mixed risk profiles.
- Monitoring Focus:
- Track DNS hostnames (`sardine663.ahrefs.net`) for anomalies.
- Monitor subnet for emerging threats due to 13 high-risk neighbors.
- Action Plan:
- No immediate firewall rules needed, but maintain visibility into network behavior.
- Cross-reference with Ahrefs' known infrastructure to confirm benign activity.
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Generated by IPDebrief | *Threat Intelligence for SOC Analysts*
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-CRAWLER-B-USA |
| CIDR Block | 202.8.42.0/23 |
| RIR | APNIC |
| Country | US |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | sardine663.ahrefs.net |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | sardine663.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 | |||
| 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 | 27% | 2 | 2 |
| routing | 13% | 1 | 1 |
| services | 13% | 1 | 1 |
| ownership | 30% | 2 | 3 |
| reputation | 25% | 1 | 1 |
| geolocation | 13% | 1 | 1 |
| Overall | 20% | 8 | 9 |
| Data Coherence | Mixed Signals (60%) — 2 contradiction(s) |
| Attribution | Low (40%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
⚠ Geo sources disagree on country: SG, US
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-22 03:09:28 UTC |
| Last Seen | 2026-06-12 03:19:14 UTC |
| Profile Built | 2026-06-09 17:54:30 UTC |
| Data Freshness | Live |
| Signal Types | 19 |
| Total Observations | 22 |
Full dossier details are available via our API.