139.5.1.132📋 Copy

# IP Intelligence Briefing: 139.5.1.132/32

## Executive Summary

IP address 139.5.1.132 presents a moderate risk profile (risk score: 40) with no active threat indicators. The endpoint is currently firewalled with no open services and resides within RAILTEL-IN infrastructure (ASN 24186). Recommended firewall blocking action is available but should be validated with additional intelligence.

## Threat Profile

• Risk Score: 40 (Moderate Risk)
• Threat Classification: No active threats detected
• Known Attacker: No
• Spam Source: No
• Tor Exit Node: No
• Blacklist Count: 0 active threats, 2 DNSBL listings (of 8 total lists)
• Campaign Affiliation: None identified

## Network Infrastructure

• Organization: RAILTEL-IN (Network Administrator)
• ASN: 24186
• CIDR Block: 139.5.0.0/22
• Geolocation: Los Angeles, CA (US)
• Network Role: Firewalled / No Services
• Infrastructure Type: Not cloud, CDN, VPN, proxy, Tor, hosting, mobile, or residential

## Technical Observations

• Open Ports: None detected
• DNS Resolution: No forward resolution confirmed
• Email Reputation: No email services detected (no SPF/DMARC records)
• HTTP Services: No active web services
• TLS Certificates: None
• Control Plane: Route stability flagged as unstable; DNSSEC validation active

## Subnet Neighborhood Analysis

Subnet: 139.5.1.132/24

• Abuse Density: 0 (low)
• Neighbor Count: 4
• Risk Distribution: 0 high-risk, 1 medium-risk, 3 low-risk
• Sibling IPs:

- 139.5.1.58: Risk 15

- 139.5.1.67: Risk 40 (same as target)

- 139.5.1.103: Risk 15

- 139.5.1.107: Risk 15

## Historical Observations

• Total Signals: 13 observations recorded
• Geolocation Signals: Mixed signals with varying confidence (US Los Angeles at 70% confidence, India inference at 52% confidence)
• Traceroute: 29 hops total, 15 timed out, transit networks include Comcast
• Persistence: No persistent malicious behavior detected (threat persistence days: 0)
• Ownership Stability: No ownership changes recorded

## Relationship Graph

• Total Relationships: 2
• Same Network Associations: RAILTEL-IN (both entries)

## Recommended Security Actions

Firewall Rules (Risk Score 40)

• iptables: `iptables -A INPUT -s 139.5.1.132 -j DROP`
• nftables: `nft add rule inet filter input ip saddr 139.5.1.132 drop`
• nginx: `deny 139.5.1.132;`
• pfSense: `139.5.1.132/32`
• Cloudflare WAF: Block with expression `ip.src eq 139.5.1.132`
• AWS WAF: Add address `139.5.1.132/32` with description "IPDebrief risk 40"

Intelligence Assessment

The IP exhibits moderate risk characteristics primarily due to DNSBL listings and network-level flags. However, the absence of open services, active threats, and malicious indicators suggests limited immediate exploitability. The subnet shows generally low abuse density with only one sibling IP sharing the target's risk score.

Recommended Action: Implement blocking rules pending correlation with additional threat intelligence. Monitor for service activation or behavioral changes.

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