83.135.177.33📋 Copy

# THREAT INTELLIGENCE BRIEFING

Target: 83.135.177.33/32

Classification: Moderate Risk

Date: July 27, 2026

---

## EXECUTIVE SUMMARY

IP address 83.135.177.33 presents a moderate risk profile (score: 40) with no active threat indicators. The IP is associated with a German hosting provider infrastructure showing recent activity but no evidence of malicious behavior. Neighborhood analysis indicates low-abuse density within the subnet.

---

## OWNERSHIP & GEOLOCATION

• Organization: VT-MNT (VT-Customer-POOL)
• ASN: 8881
• Country: Germany (DE)
• City: Giessen, Hesse
• Network Block: 83.135.128.0/19
• Registration: RIR-ripe

---

## THREAT ASSESSMENT

Control Plane: DNSBL listed on 2 of 8 threat feeds. Operator score: 0.2609 (Basic). Route stability: false with zero route changes in 30 days.

---

## NETWORK INFRASTRUCTURE

• Service State: Firewalled / No Services
• Open Ports: None detected
• TLS Certificate: None
• DNS PTR: i5387B121.versanet.de
• Forward Resolution: Forward confirmed (versanet.de domain)
• Email Auth: SPF enabled, DMARC not configured

---

## NEIGHBORHOOD ANALYSIS (83.135.177.0/24)

• Abuse Density: 0
• Subnet Classification: Clean
• Total Siblings: 8
• Active Siblings: 1
• Threat Siblings: 0

Notable Neighbors:

• 83.135.177.185/32: Risk 40 (Moderate)
• 83.135.177.221/32: Risk 40 (Moderate)
• 83.135.177.35/32: Risk 25 (Medium)
• 83.135.177.52/32: Risk 25 (Medium)

---

## OBSERVATION HISTORY

18 signals observed within recent timeframe. Most recent signals (July 27, 2026) indicate:

• Subnet classification: Clean
• Ownership stability: No changes
• Geolocation inference: Germany (confidence: 52%)
• Network role: Residential/Infrastructure confirmed

No evidence of persistent malicious behavior or threat persistence days recorded.

---

## RELATIONSHIP MAPPING

DNS associations consistently resolve to i5387B121.versanet.de across 10 relationship records. Same-network relationships confirm association with VT-Customer-POOL infrastructure.

---

## RECOMMENDED ACTIONS

Current Risk: Moderate (40)

Recommended Action: Monitor or block depending on organizational policy

Firewall Rules (if blocking):

```bash

# iptables

iptables -A INPUT -s 83.135.177.33 -j DROP

# nftables

nft add rule inet filter input ip saddr 83.135.177.33 drop

# Cloudflare WAF

Expression: ip.src eq 83.135.177.33

```

Rationale: While no active threats are detected, the moderate risk score and DNSBL listings warrant consideration for blocking, particularly if this IP is initiating unwanted connections to your infrastructure.

---

## ANALYST NOTES

• No open ports detected; target appears to be a firewall-protected host
• Neighborhood shows low abuse density (0) with most neighbors in low-risk category
• Recent activity observed but no malicious indicators
• Recommend continued monitoring if no legitimate business reason exists for this IP's traffic to your environment

Status: Low immediate threat — monitor or block per policy discretion

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