202.8.40.51📋 Copy

# IP Intelligence Briefing: 202.8.40.51/32

Classification: Low Risk — Ahrefs Crawler Infrastructure

Risk Score: 25/100

## Executive Summary

IP 202.8.40.51 is associated with Ahrefs Pte Ltd (ASN 140577) and operates as part of the AHREFS-CRAWLER-A-USA network. The IP is currently classified as Low Risk with no active threat indicators, blacklist entries, or malicious campaign associations. However, geolocation validation indicates a discrepancy between claimed and actual positioning, warranting monitoring.

## Technical Profile

Ownership: Ahrefs Pte Ltd administrator

ASN: 140577

CIDR Block: 202.8.40.0/23

Geolocation: Ashburn, VA, US (39.05, -77.49)

DNS Hostname: sardine051.ahrefs.net

Service Status: Firewalled / No Services (open ports: none)

## Threat Assessment

• Abuse Confidence Score: Not applicable
• Blacklist Status: Clean (0 blacklist entries)
• Known Campaigns: None detected
• Threat Indicators: None
• Known Attacker Status: False
• Spam Source Status: False
• Tor Exit Node: False

Risk Breakdown: The IP maintains a low provider score (0) and authority score (0), with stability metrics indicating no persistent malicious activity.

## Anomalies & Validation Issues

Geolocation Discrepancy: Recent signal observation (2026-07-31) indicates an RTT violation. The IP claims to be in Ashburn, VA, but measured round-trip times suggest an actual distance of approximately 6,312 km from the claimed location. This geolocation implausibility (RTT 27ms < minimum possible 126.25ms) suggests either:

• The geolocation data is inaccurate
• The IP may be in a different physical location than registered
• Anycast or routing anomalies may be present

Operator Score: 0.3478 (Basic) — Indicates limited network infrastructure characteristics.

## Neighborhood Analysis

Subnet: 202.8.40.0/23

Abuse Density: 0

Risk Distribution: 95 low-risk, 5 medium-risk, 0 high-risk neighbors

Classification: No inherited risk from adjacent addresses

The surrounding subnet exhibits minimal abuse activity, with the vast majority of neighbors showing low-risk profiles consistent with the target IP.

## Relationship Graph

• Network: AHREFS-CRAWLER-A-USA (same network classification)
• DNS Association: sardine051.ahrefs.net
• Correlated IPs: None detected

## Historical Observation Trend

Total Observations: 14 signals recorded

Threat Persistence Days: 0

Ownership Changes: 0

Status: No persistent malicious behavior observed

Recent signal activity (2026-07-31) shows:

• RTT/geolocation validation failures
• Basic operator classification maintained
• No emergence of new threat indicators

## Recommended Actions

Current Status: No immediate blocking or mitigation required.

Monitoring Recommendations:

1. Monitor geolocation consistency over time to determine if the RTT anomaly is persistent

2. Correlate with known Ahrefs crawler behavior patterns

3. Maintain awareness of any subnet-wide risk shifts

Firewall/Network Rules: No specific blocking rules recommended at this time. The IP is classified as infrastructure with no open services or malicious indicators.

## Conclusion

IP 202.8.40.51 represents legitimate crawler infrastructure from Ahrefs with a low-risk profile. The primary concern is the geolocation validation discrepancy, which should be monitored but does not currently indicate malicious activity. No blocking or restrictive actions are warranted based on current intelligence.

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*Report generated by IPDebrief Intelligence Platform*

This summary was generated by AI and may contain inaccuracies. Verify critical details independently.