185.43.17.21📋 Copy

# IP Intelligence Briefing: 185.43.17.21/32

Classification: Low Risk | Risk Score: 30 | Last Updated: 2026-07-29

## Executive Summary

The target IP 185.43.17.21 presents a low-risk profile with no active threat indicators. The address is associated with FastwebNet infrastructure (fastwebnet.it) and resolves to a host in the ARPITEL network (185.43.16.0/23). While the IP itself shows minimal malicious activity, the surrounding /24 subnet demonstrates elevated neighbor risk, with four adjacent addresses flagged as medium risk.

## Technical Profile

Network Classification:

• Origin ASN: 42764
• BGP Prefix: 185.43.16.0/23
• Route Stability: Unstable (route changes observed)
• RIR Registry: RIPE
• Operator Score: Basic (0.2609)

Geolocation:

• Country: Italy (IT)
• Region: Apulia
• City: Foggia
• Geolocation Confidence: 0.70 (multiple sources)

DNS & Hostname Resolution:

• PTR Record: 185-43-17-21.ip295.fastwebnet.it
• Forward Resolution: Confirmed (1 host)
• Domain Authority: fastwebnet.it
• Email Authentication: SPF and DMARC configured

Network Services:

• Open Ports: None detected
• Service Status: Firewalled / No Services
• TLS/HTTP: No active services observed

Threat Indicators:

• Blacklist Count: 0
• Known Attacker: No
• Spam Source: No
• Tor Exit Node: No
• DNSBL Listings: 2 of 8 total lists

## Behavioral Analysis

Temporal Signals (13 observations):

• Ownership Changes: 0
• Threat Persistence Days: 0
• Is Persistently Malicious: No
• Threat Observation Count: 0

Network Behavior:

• Honeypot Hits: 0
• Enumeration Strikes: 0
• WAF Violations: 0
• Total Incidents: 0

Traceroute:

• Hop Count: 13
• Transit Networks: Comcast
• First Hop RTT: 0.3ms
• Last Hop RTT: 139.1ms
• Timed Out Hops: 2

## Neighborhood Assessment

Subnet: 185.43.17.0/24

Abuse Density: 0

Total Neighbors: 7

Risk Distribution:

• High Risk: 0
• Medium Risk: 4
• Low Risk: 2

Notable Neighbors:

Relationships:

• DNS Association: 185-43-17-21.ip295.fastwebnet.it

## Recommended Actions

Current Risk Assessment: No immediate blocking recommended. The target IP maintains a low-risk profile with no active threat indicators or malicious behavior.

Monitoring Recommendations:

1. Monitor subnet 185.43.17.0/24 for activity from the four medium-risk neighbors (185.43.17.30, 185.43.17.37, 185.43.17.53, 185.43.17.89)

2. Maintain standard logging and observation for the target IP given its association with the fastwebnet.it domain

3. No firewall rules required at this time; consider rule creation only if behavioral patterns change

Threat Intelligence Notes:

• The IP demonstrates no persistent malicious behavior or campaign associations
• DNSBL presence (2 of 8 lists) warrants monitoring but does not indicate active threat
• The subnet's medium-risk neighbors should be included in broader subnet-based monitoring policies
• Route instability suggests potential infrastructure changes; monitor for address migration

Assessment Conclusion: The target IP 185.43.17.21 is classified as low-risk with no current threat indicators. Primary concern remains the elevated risk profile of adjacent subnet addresses, which should be incorporated into ongoing subnet-level monitoring procedures.

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